What age group buy Leica cameras?

I'm curious what age group buy Leica cameras. Only who I know actually uses Leica is a middle age graphic designer, who takes street style photography for fun.

My personal image of Leica users are nostalgic old collectors or young hipsters who hates everything mainstream. Also, I'm wondering if any documentary professionals really use them.

Please correct me if I'm wrong. I wish I could try M9 and Leica lenses myself if I had $$$, so I'm not trolling here.