Sigmund - I's like to address your post about your concern for your sons. Because of course, as parents, we're all concerned about doing what we can to make the world a more friendly place towards our own DC as they grow into adulthood.
Your part about school and playtime has been covered by other posters, so I'll leave that for now.
- "Beyond that, more women than men go to uni and and graduate"
I would agree with you that the current education system, in some ways, may favour girls over boys, in that the classroom setup favours those who can sit and study quietly. But this is not something feminists have campaigned for or had implemented. Luckily education is constantly evolving in light of research, so I imagine changes are in the pipeline. Your best solution is to work closely with your children's teachers. There's no reason why your sons should get to go to university, if they are that way inclined, just because more girls happen to be going. This statistic should not negatively affect them.
2)"Beyond that, if my sons marry they are far more likely to be screwed over by the law courts, far more likely to lose custody of their children."
What do you mean by screwed over? As far as I'm aware, a couple's assets are fairly distributed. If a woman gets more of the assets, then it's because she keeps the house etc where the children live. But the courts start from a position of 50/50 residency these days. As long as your sons aren't abusers, they should get their fair share of assets and child custody. The law is recognising the importance of responsible fathers, which is only fair and as it should be. Feminism challenges the notion that women are automatically the better parent and better able to care for children.
- "If they are victims of DV, they are far less likely to be believed and support is very thin on the ground."
This is true and very unfortunate. But it is a sad fact of our society that men are expected to be strong, tough, able to look out for themselves, which results in them being less likely to be believed. And men apparently have seen no reason to put support measures in place for themselves in the way the women have, probably for the same reasons. Feminists challenge traditional gender stereotypes and would love men to be able to express themselves openly and freely. Perhaps they would be less aggressive if they didn't have to bottle up their emotions. Women did not cause this situation. Or do you think women should be setting up refuges for men too?
I can understand your concerns for your sons, but I don't understand why you think you have to align yourself with an organisation which seeks to oppress women in order to address these concerns.
Perhaps I can express it in these terms. Take gay marriage. A few years ago, after much campaigning on their own behalf, gay couples won the right to civil partnership. Not quite full equality, but certainly a step in the right direction. I'm sure you wouldn't argue that prior to this, they were being unfairly discriminated against.
But then some straight couples who didn't want a traditional marriage felt that they would like a civil partnership too. I can fully see why they would want that - they would get legal protection within their relationship without having to be married. And I'm sure gay people would also understand this. However, if straight people want civil partnerships, it's up to them to campaign for it. No-one would expect gay people to do it. And it would also be madness for straight people to ask for this right to be taken away from gay people just because they haven't got it.
Similarly, when feminists are campaigning for their rights, it's not that we don't want men to have the same rights. It's just that if men feel they are losing out, it's up to them to fix the problem. Not to blame women for looking after themselves first, or to try to take those rights away again. There is no point to either tactic - everyone loses. Can you see that?
Human rights are not a limited resource - there are plenty to go around.