Don't these people have any hobbies or interests? Hobbies and interests, a personality, dare I might say, require "stuff". You develop a sense of style, and you get things around you that help to describe and tell your story in life.

I don't understand the people that are content with this kind of self-imposed "I can do with just the bare essentials" lifestyle. Unless you're traveling, or doing something of that nature, I am generally distrustful of people who can be gone in an hour. There's something about this kind of lifestyle (I've known several minimalist people well) that is synonymous with fear of commitment and general instability in their life.

A lot of people I met have adopted the lifestyle because it's a learned behavoir from either years of instability, an off-beat childhood, or some kind of abusive relationship. Human beings need stuff around them, and it's perfectly normal to accumulate stuff if you've lived somewhere any length of time.

On the other end of the spectrum of minimalism would of course be hoarding. Not saying that either lifestyle is "bad", but you wouldn't call hoarding exactly normal, would you?