I'm sure I would be an all-out minimalist if not for my wife and son...
It is interesting how we might change our lives without family considerations. This ties into what I was saying about not having children the other day also. Having children generally forces change, and people don't want to change what they like in unobligated life. But, having children often forces changes that are a better for society as a whole.
I think having children can also benefit a person for the better too. I know I try harder to be a better person than I would if I were alone. That unobligated life usually sounds good in theory but more often than not that responsibility of family life keeps me out of trouble and focused on not only living for today but also planing for the future in ways I might have otherwise.