Eh, you can live comfortably most places. Once you get above 50ish thousand population, if people can’t stand a place, the problem is usually with them, not the place.
my friends with children live pretty similarly regardless of where they live. Some of them certainly live in nicer places and some of them live in places I’d prefer not to live, but it’s basically a similar, comfortable lifestyle once you have the money. Lots of time on kids activities, some sort of social club whether country club or tennis club or yacht club, some combination of golf, tennis, hunting, fishing, and/or water skiing for recreation. The same handful of restaurants regardless of how many are available, etc.
The biggest difference to me is how much driving they have to do. The ones who live in a place where their kids can run around their neighborhood and get to some sort of activity like a club oool or tennis courts where the parents don’t have to chauffeur them everywhere and when they do, are driving 10 minutes and not 30 seem to have a much easier lifestyle.
I'm probably arguing semantics here, but I would think if you are "comfortable" you should be happy too. I have lived in 4 places over the last 10 or so years. Big city, suburb of same big city, small city, and a remote small town. We have only been truly happy in two of the places. The other two were strictly for career purposes and I will never go back.
Yes if all 4 had been towns of 50,000 scattered throughout the same region/culture /geography (say Mississippi and Tennessee.. Hattiesburg, Tupelo, Jackson TN.. etc) it may not be the case. But the reality is Bend Oregon and Lafayette Louisiana are so completely different even though they are roughly the same size, it's almost guaranteed most people would be much happier in one vs the other.
In a city (1,000,000 + people) you are staring at traffic, high crime, bad public schools, poor air quality, short commutes to great jobs, awesome food options, pro sports, awesome arts/concerts and many other unique pros and cons
In a suburb it's usually moderate congestion, minimal crime, moderate air quality, long commutes, great public schools, chain restaurants out the wahoo, 27 seasons a year of youth sports, and a golf cart to drive around your neighborhood.
The small city (100,000 + people) is a combo of those two.
The small rural town is the true outlier.
All that said, if you take any of those types of places and change the location the culture is completely different. The weather is different. Do you live at the beach, in the mountains, access to outdoor activities, if so what kind?
So yes, in all 4 places we had some level of comfort... Decent/safe home, some disposable income for entertainment, etc. But based on mainly geography, our happiness is 10 fold higher today. If you picked my family up right now and moved us to Atlanta GA or Hattiesburg MS or Plano TX it would be miserable as 17 for us. Literally a prison sentence. That says a lot about us sure, but also the differences in places and the happiness/comfort it affords people with different interests.