I think tabletop roleplaying games (e.g. D&D, Pathfinder, etc) are great, and it has been nice to see them gain some popularity over the past decade.

I've been emphasizing them as a hobby over the past couple years for a few reasons.

-All of my work is quantitative, so for hobbies I like totally different things. Fantasy, basically. Spreadsheets during the day, slaying evil clerics at night.

-I sit at a computer much of the day. I've been minimizing computer gaming over the past five years because I don't want my hobbies to also be at a computer. Outside hobbies are ideal, but for inside hobbies at least I don't want to be close to a screen or to have constant pressure on my wrist/shoulder from using a mouse.

-They are mathematically-involved strategy games in combat, combined with character decision-making outside of combat. Rather than read a fantasy novel, a player can participate in one. Active participation rather than passive consumption.

Active, strategic, whimsical, and social.