I know quite a lot of people, both near and dear to me and otherwise, who live in "new" subdivisions on the outskirts of Perth, some 50km away from the CBD. When we want to visit or they want to visit us, it takes nearly an hour each way, so it doesn't happen very often. They don't actually have any space - block sizes are generally 400-500sqm and house sizes 250-300sqm so there ain't any backyard to speak of, or room from the neighbours. They are distant from their friends, families, doctors, shops, community centres, clubs, pubs, good jobs etc etc etc. You get the idea.
When we do visit, we generally make a weekend of it, staying overnight. The streets are dead, there are no trees to be seen, there is hardly any community spirit whatsoever in the neighbourhood. Everyone is inside their own lovely brand new houses in their theatre room or on the computer being entertained. No-one even gets out of their cars to open the garage door so you see no-one in the street except the occasional dog walker. They all love their houses and the interior space and the lovely tiles in the bathroom etc etc but they are so isolated from the people and services around them - it's demoralising and depressing - I'm always glad when we leave the area for that reason. I always feel sorry for the people who live there.
We also stay with other relatives on a farm 2.5 hours out of Perth. It's further away but we also make a weekend of it and when we go there we find a rural community with established families, many of whom have been around for generations, just down the road and up a bit. Strong community spirit, great pub culture, fox / roo shoots, helping out with shearing, yard work, mechanical problems - share the wood cutter etc etc etc. It's not an affluent community at all but it does very well. An uplifting place to live, despite its remoteness and a general lack of money going around. I almost feel jealous of the people who live there, until I think of schooling issues.
But comparison of the fringe suburb dwellers with apartment dwellers who live near shops, transport options, clubs, pubs, restaurants, parks and other people, friends and family - give me an apartment any day. Outer suburbs were fine when they were 20km from the city. When they are 50km from the city it's just depressing - there is a limit to the viability of everything and cheap infrastructure is still not viable if it is not used by enough people. In order to get enough people to make the infrastructure viable, we need more density in our planning. And we need a social shift to value communities and social interaction over big houses, instead of the other way around.