Hi Zilla
Preferring a Mommy or Daddy really has more to do with ones own sexual orientation.
I see that you are Bi, so I'm guessing you would be open to having either.
I would not solely rest the decision of wanting a Mommy or Daddy on how your actual parents have treated you.
Just because your father was mean to you it does not mean that a Daddy would be the same.
It comes down to what you want out of the relationship and what you are willing to give too.
Generally speaking most see Mommys and Daddys as being very different.
Mommies (stereotypically) being the more caring, nurturing and kinder type and Daddies being the more strict but protecting types.
But Its important to remember that both can be all or some of those things to and for you.
Another thing to consider is if you or them would want your relationship to be a sexual one or not.
My personal preference (being mostly Lesbian, lol) would be to find a Mommy, but I am also open to having a Daddy as well.
Although, I much rather find a Girlfriend or Boyfriend that accepted me and my wetting problem.
It would be a bonus if they were to accept and indulge my little personality at times too as we are sort of a package deal, lol.