What you have failed to demonstrate is how or why same sex parents can't provide the same outcome as a male female parents. All you have really said is that you think it should be M/F and that's it. So that's your opinion and that's cool and you can raise your kids however you like.
Sorry if I've offended you, that was not my intention.
I've raised 4 kids and have 7 gkids and most likely I will have several ggkids god willing.
I'm presuming you are in a gay parenting situation so there is no male/female component involved in any of your children unless it's from a known source but still heritage becomes jumbled and once again your depriving those children of grandfathers, ggf etc.
You can talk your way around it a thousand ways but genetics eg m/f relationships are a natural occurrence since Adam wore nappies and if it wasn't for those billions of relationships neither you nor I would exist, period.
I'm not denying that you and your partner could raise children, that's a totally different scenario to what I said about equality.
There is a difference between a man and a women apart from having different sex organs.
A child often needs his mommy and the same goes for his daddy. Sometimes he or she needs one or both at any given time during their childhood.
Role playing? Is that what your saying works?