Correct me if I'm wrong but you choose to have children, a partner and other "obligations", so how is he the self-righteous one?
Because he doesn't have kids?
It is an obligation to take care of oneself, to be self sufficient. What you say is slandering this guy's work.
he's not living at home with his parents paying his rent, he's not living on welfare. He's making his way in the world on his own. "No real obligations"?
I struggle too, with resisting consumerist urges; which have been ingrained in me since birth. But really, they are right. Does purchasing Tom Ford apparel make you happy? It's fine if it does, but what happens if you don't? Nothing at all, actually.
We don't need all the things we're so constantly sold, and recognizing that lifts a weight (or anxiety, if you wanna call it that) from the shoulders. There's freedom in not needing things.
Go outside. It's free and fun.
I'm sorry, but your whole experience reeks of the annoying kind of self-righteousness that only people with no real obligations have.