Babysitting is the big one for me. I can eat cheaper, but I can't really get a cheaper babysitter. My wife used to babysit for 5 bucks an hour just 10 years ago, and high school aged girls now want 20 an hour minimum. We're not talking "professionals" and my cost of going out is now at least 60-80 bucks without acting else.

This is also caused by the decline in social activity and community. People in the past didnt have this problem as much because they had tons of trusted family members, friends, neighbors, who also had children and could thus look after theirs for an evening.