Ask yourself this question: Name one obligation that women have towards men that is enforced by law or social custom and she cannot get out of on a whim?
The answer is that there are no such obligations. However, men have many obligations that are both enforced by laws and social customs.
Now is it chauvinistic for a man to think he has a right to have sex with his wife? No. If a man agrees to have sex with only one person for the rest of his life, to financially support her, protect her life with his own, don't you think she should be expected to have sex with him? What's the point in being monogamous but not having any sex?
If you feel that you have no obligation to have sex with your husband then why marry at all?
And guess what, housework is not real work. When monetized it is one of the lowest paid professions.
Tell me what the difference is between a woman who lives alone and works and a woman who is married and doesn't work? The married woman works about 40 hours less a week but probably has a better standard of living. Housecleaning is something that everyone does. It requires no special training or skills. To declare that housework is real work is like declaring that taking a bath or brushing your teeth is real work. Hygiene in the home is expected.
Now does this mean that after spending years cleaning house entitles you to half of what your husband makes? The law says yes but the law is sexist and biased against men. You've already spent years being financially supported, you've had your room, board, clothing, healthcare, taken care of as well as gifts and vacations and use of a car. The cost of these things far exceed the value of your house cleaning.
So why should you get half of what is left over when you decide you wan to abandon your family? The answer is you shouldn't but because women have demanded the law privilege them in this matter you can leave and take as much as you can get.
For the record, if I ever marry you can guarantee she's going to work and pay half for EVERYTHING. I'll do half the housecleaning. It's not hard and frankly I like the feeling of autonomy over those little things. This way if we ever hit a rough patch she's not going to be able to cash out. She'll get half which is what she paid for. My personal savings and investments will be mine and she will never be able to touch them.
Oh yea, and most importantly, I plan on doing half the child care. Even if I have to work part time. No woman will come into court and say I'm not active enough and therefore I should be denied access to my kids and made to pay her money for decades. When she divorces, we share custody and she pays her own way.
I'm no woman's property. Going 50/50 is the only way you can ensure a woman has an obligation towards you.