Not living in the suburbs improves mental health.
The novelty wears off after a few years and with kids it becomes more of an annoyance than anything else.
Sure, I'm not out clubbing every night, but I am still better off in a walkable environment than I was before.
Also, noise pollution DEFINITELY isn't just as bad as air pollution. No doubt it CAN cause stress and CAN disrupt sleep, but air pollution is clearly a far bigger problem in general.