Stuff makes me happy. Moving from a tiny apartment with a small everything to a spacious house made me much happier. It's comfortable. I now have a wonderful kitchen to cook, which I enjoy doing, that I just couldn't do as well before. I have a view out my large bay windows. It's great.
Driving a nice car is awesome, especially if you commute longer distances or like road trips. I enjoy a comfortable luxury sedan with power.
I'm much happier with nice things. Society isn't telling me I like my large flat screen tv. I am because it looks stunning on my wall.
I agree with what others say here about debt though. Don't go into debt to buy yourself a bunch of crap you don't need.