Would you be okay with husband becoming a stay-at-home dad?

Okay. Long story short. I make more money than my husband. And now he says he wants to stay home with our two kids. (Age 1 & 3.5) On the one hand - great. On the other, I feel like I will get really jealous of the 3 of them at home, and me working. Both of us not working is obviously not an option. 
Plus I dont think he realizes how hard it's gonna be. Also a small sexist part of me still feels like a man should earn money. (I'm ashamed of that part - hence the anon post.) What you think? Would you be okay if your SO became a stay at home dad? 

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