Ask HN: Spouse not on the same page

Curious if anyone can share some experience with marriage. I married someone who isn't as intellectual as me. She was generally supportive of my tech interests and career ambitions when we were courting. At the time she had a job (though she had massive student loans). A few years into our marriage, my wife occupies (shall I say demands) a lot more time than before. She doesn't work anymore either (suffered job loss so is going through a bit of emotional stress - so essentially a couch potato - unlikely she will find a job at her previous position). We are in our mid-30s. Wife wants to turn homemaker, and have kids. I'm without any kind of support network. I make decent money in tech (120K+) so should be able to support a family. But feel overwhelmed. I thought my mid-30s was going to be my last chance to do something entrepreneurial. If we have a kid and just my income, that dream is gone. Any one else go through something similar?