Just seen this thread.
My answer, as would be true for most, possibly all, men is not enough.
I now speak up and challenge bad male behaviour, but until my mid 20s I was that coward who would sit silently and not challenge comments etc.
I tried my best to support my wife in looking after our young daughters, splitting housework and cooking, getting up during the night, you know the stuff I should have done. It won't have been enough though.
I challenged a manager at work who was making inappropriate responses about a young female apprentice and supported her in bringing a complaint about him. Don't deserve credit though, I did what should be done but all too often isn't.
Essentially whatever I do can never be enough as even if I was perfect, and believe me I am not, then it would not be enough to balance out all the bad male behaviour that exists.
Clearly I want a better world for women as I would like a world in which my daughters would not have to endure all the things that women have and currently do.