I'm fortunate enough to work from home now, so going out for lunch is a rare occurrence. At previous companies, I tried to balance how much I did - enough to bond with coworkers, but not enough to make my wallet hate me, which usually ended up in eating out every 1-2 weeks for lunch (usually on a Friday). Near the end of my last job, the last month or 2 was completely miserable, and I switched to eating out several times a week (almost every day near the end), just to escape. So, maybe fewer people going out for lunch is a signal of more job satisfaction overall, based on my extremely tiny sample size of one person? Hmmm.