If you don't believe that, just consider
the Domliest PIG in the Universe (me) when getting pulled over by
the police for speeding:
COP: "Sir, do you know how fast you were going?"
PIG: "Of course I do, but I don't have to tell YOU, you facist bastard!"
Of course, I don't use those exact words.  My exact
words are:
"nosir"
This is because in this case, I submit to a higher power - one that has
the ability and possibly the desire to beat me senseless with a night
stick and maybe put me in a cell with a guy named 'Bubba' who may be
bigger, meaner and with a completely flexible sexual
orientation.
So, discretion being the better part of valor, it's better to
submit.
How do we explain submissive men ?
OK, let's consider this differently.  In the case above, we see
that
all men submit to a higher authority.  But we don't LIKE
it.  What about
the man that willingly submits to a female that presumably he should be
genetically wired to dominate.
Defective Genes ?
In the wild, the quality woman should be looking for a protector - one
that will help her protect her genetic investment in the
future.  If
she picks a weaker man in the hierarchy, her life, her genes and in
general
her situation are going to be less than if she picked more
wisely.
Morever, the weaker man is unlikely to get the best woman and HIS
chances of having the superior offspring fall off dramatically as
well.
So far in the evolution of mankind, weaker men and women who choose them
have been at an evolutionary disadvantage and tend to be 'not a factor'
in the success of the species.  Natural Selection.
This may not be as much of a factor as it was in the past, Mankind has
recently taken an active hand in our own evolution, but this IS the
way Nature had it arranged.  (read about the future below)
How do we explain Dominant women ?
This isn't nearly as complex.  A woman SHOULD be as strong as
she can
be in any situation she encounters.  Weakness, for it's own
sake, is
rarely a good thing.  Women routinely dominate other women and
sometimes
men in the normal course of life, love, business, etc. 
Regardless of
a woman's role in any given relationship, the question is, how does she
relate when she encounters a male that is stronger?
Again, the genetic imperative for a woman IS to hold out for the
strongest
man.  Chase away (dominate) those that do not prove 'worthy' of
her
tremendous genetic prize.  This is why surrender isn't really a
choice:
TRUE surrender is the giving in to higher power when there is
no other
choice.  So a Dominant woman that willing surrounds herself
with men
that are weaker than she, may have made a choice not to expose herself
to dangerous situations where she may have to submit, perhaps has
simply not come across a man worthy enough to take her submission
or possibly is just a bitch (lol THAT was a joke ..  but then
...  maybe not).
In any case, it doesn't rule out the possibility that she may not at
some future time.
Genetically, with the traits of Dominance being tied to strength, combat
and struggle where submission is tied to serving, nurturing and caring
(tenderness) it may be> that Dominant women may not have as strong
a caring/nurturing/mothering instinct and therefore may not be
the wisest choice for the more fit male's genetic investment. 
At best
it's a sliding scale where just like the weak MALE may not be fit to be
the best provider, there comes a time when the Dominant woman is TOO
Dominant for be a good nurturer.  (read about the future
below)
So where does that leave us for the future ?
The world that we've constructed around us is very complex. 
The
proper care of offspring almost requires a 2 parent household
because it now takes two parents to generate the income needed to
provide the best possible care.  Certainly 2 parent families
seem
to provide the BEST environment for children.  This puts many
women
in the traditional role of provider, along with the male (You'd know
this if you'd ever considered the difference between YOUR life and that
of Ward and June Cleaver) and so ...  what WAS important in the
past
may NOT be so important now.  A Dominant woman (primary income)
with
a submissive man (care giver) can still make a good family environment,
although the conventional psychological wisdom is that the role reversal
is not the IDEAL for the children.
Well recently (VERY recently) mankind has taken an absolute hand in
determining the course of our own evolution.  Convenient world
travel
has made a mixing of cultures and races that had previously evolved
separately, so that's gone.  Advancement in medicine has
allowed the
weaker people who, in wild nature would not have survived, to thrive
and pass on their genes, so that's out.
Did you know that Phoenix, AZ is one of the allergy captiols of the
world?
A higher number of allergic people per captia are born in Phoenix each
year than anywhere else in the USA.  Why? Because for many
years, people
with allergies were urged to move there to escape the pollens of their
native places.  Each one brought all the plants and flora that
they
were not allergic to, to the detriment of their neighbors who were
and now people who themselves are genetically disposed to allergies meet,
marry and breed with other people who are disposed to allergies
and the result is children that are more susceptible to allergies
than you'll find anywhere else in the USA.
Advances in science have led to far better nutrition than
possible for millions of years (people all over the 'advanced' world
are getting taller and more robust) and now mankind adapts our
surroundings
more to suit our needs, therefore less need for natural selection to help
pass on only adaptive genes.
Finally, the opening of the workplace and business to women has allowed
them
into male dominated worlds ...  but at the price of assuming
male-like
ROLES.  As of yet, this is change, but NOT evolution -
evolution takes
thousands of years ..  and THAT will come IF the change enhances
the
species.
Perhaps our evolution will now take a path toward the mental aspect
rather than the physical.  Or maybe we've flatlined our own
evolution
and Nature will take a completely different path - starting with the
monkeys ....  or maybe some other lower life form, like AOL
addicts.
The next millions years will be really fun to watch.