I was starting to get into ham radio again (been licensed over 20 years) but somehow, as the weather got warm, sitting on my butt indoors at a radio pales in comparison to biking.
Ham radio can go along on a bike anyway, bicycle-mobile is a passion for some, hehe they exist to make 'bent riders look hip.
Biking may actually ADD a hobby for me, that I'd like to add, I may start taking along a sketch pad in the messenger bag, since after putting in some miles nothing's better than hanging out at a coffee shop, and kicking back, and I'd like to learn to do those quick-draw type portraits, since that may well help pay for bike stuff as well as being fun.