I think that people overlook the social barriers to adopting even intermittent fasting. My partner (a doctor) thinks it's bonkers and dislikes it when I want to skip meals that we would normally share (family dinner). That's not an insurmountable barrier, but combined with nights out with friends, drinks after work, etc...my fasting routine can get worn down nothing after a few weeks. I hope as the health benefits get popularized, we see some cultural shifts that make it more acceptable in social settings and family structures.