Once kids are in the picture, school districts with greater proportions of wealthier families is the priority.
Plus, the easiest way to avoid dealing with homeless people and/or gangs is to live in far flung suburbs where everything is so far that cars are a necessity.
"Avoid" being the operative word! Unfortunately we've chosen to slap on the suburbia band-aid that just introduces more negative externalities. Dense cities in Europe and East Asia are much safer _and_ score better on education metrics, so it's not like eschewing urbanity is working well for us comparatively.
Plus, the easiest way to avoid dealing with homeless people and/or gangs is to live in far flung suburbs where everything is so far that cars are a necessity.