There is a difference between "we" and "you". Yes, I am not 5 mins away during the day, however my wife and kids are. In 4 years, we've never had to pay for a babysitter, we are very close with our families and see parents and nephews weekly. That would change if we moved further away for a shorter commute.
We could move close to SF, save maybe an hour or so commute each way, pay more for a smaller house, and then my kids no longer see their cousins and grandparents every weekend and we no longer get last minute babysitters.
Trust me, I analyzed my situation before and during this commute. It is very different from the outside looking in than when you are in the middle of it. And a few comments on a site like HN is missing a whole lot of context about a multi-faceted issue.