Yea, more dual-income families means:

- Bidding up the price of housing

- Fewer parents active in overseeing the schools, volunteering to fix up the community, etc.

- Less general slack for parents to help each other out

- Fewer mom friends around during the day, less social life for existing stay-at-home moms

- Peer pressure and implicit societal pressure to work a career

- Parents sending their kids to camps and aftercare, rather than having kids free-range around the neighborhood and play with friends, so fewer playmates for the non-camp/non-daycare kids.