re: What are good hobbies for mid-20s to mid-30s men to pick up?

I play chess. The downside to picking it up later in life is that people who have been playing since they were young will be so far ahead of you that you will never catch up. Depending on the club that you go to you will just get destroyed. When I went to the Baton Rouge club for classical games I would just get repeatedly destroyed by people whose playing strength was 500-800 points higher than mine. Treme chess club for rapid games is a little more casual though, and I would be able to fairly regularly take games and be competitive at least. There's always online chess games though for more regularly matching against people similar to your own strength. Playing OTB is more exciting, fun, and instructive though, imo