Hi there. While I don't know you and have no idea if this is an aggressive sexual question, or an honest confusion due to some traumatic happening in your life, I would still answer as such either way:

I do not know that "women seem to want men as partners" and then behave in the manner you have come across. Most straight women I know who "prefer men" do not belittle men, prefer women sexually in their fantasies or have ever (in my presence) boasted about the "superior sexual skills of lesbian partners." In fact, most of your question seems antagonistic with a hint of paranoia. Most straight women I know prefer men sexually both in bed and in fantasy. Most straight women I know only belittle men during fights or breakups and then when in their next straight relationship proceed to rave about their new lover. If there's problems, they rarely share it in a manner meant to belittle their partners.

For instance, I am mostly straight with a few kinks thrown in here and there. I've dated both men and women, and the lesbians I know have never exceeded in skill the partners I've had that were straight or bisexual men.

If I may ask, how many times has this happened to you? Because it sounds to me as though you've been just unlucky in the women you have dated.