I feel ya. I have three thoughts:

1. Could view it as a cultural thing. For example, some cultures might embrace minimal personal space. And, the media keeps talking about the "tiny house movement."

2. Everything is relative. I personally opted to buy a smaller house than I could afford, and I generally try to live minimally.

3. In general, it's better for the collective good (less waste) to move in that direction. That said, technological advance might some day allow every human to live in a McMansion.