My girl's mom was stay at home and worked her ass off. It really depends upon the woman and the marriage. Her mom was ideal: she was educated, but could cook like no other, kept the house immaculate, and came to every single school activity/meeting especially since her husband worked so much he couldn't make it. She was always on them right after school, went to their activities, got involved in their homework etc... so when they weren't home she was also running errands, grocery store, laundry, cleaning the house from top to bottom and handling things like bills, phone calls etc since she was in charge of the bank account but her husband wasn't.
My mom was the same way so...
it really depends upon the quality of the woman you marry.
If she's sitting at home on her ass not contributing and only cooking a little etc... then yea...she's not getting her worth. Ideally she should be up when you're up with the kids etc and holding shyt down when you're not there and keeping everyhting on task.
My moms took running the household very seriously. She got up at 5am before all of us, had breakfast ready, and was already starting laundry/organizing shyt for the day etc. She worked her ass off.
So if your stay at home is lazy, she has to get her mind right because she could bring a whole lot to the household even if she's not working 9 to 5. When we got older and my mom had more time she ended up getting a part time job to also contribute and add to her day, even when she didn't have to...
but my mom is one of those type A personalities type, just like my girl's mother who did the same thing and now works since she's out of the house and graduated etc...
It's all down to the quality/ambition of the individual.