I used to be more active in motorsports when I was in college. I wasn't super serious, but I'd typically do at least a few events (usually track days, sometimes autocrosses) a year. I eventually gave it up because I didn't have the money or time anymore. After graduating and becoming more comfortable financially, I picked up a cheap second car that would work well for that stuff. I'm having a hard time motivating myself to actually use it, though. One day of track driving can cost $300 or $400 once lodging and gas are factored in, and that's before considering vehicle prep and maintenance. It's a lot of fun to drive on the track, but it's also a lot of fun to go for a run or bike ride for a lot less money.
I'm tempted to say biking, but it's probably more accurate to say that it refocused my priorities. Bicycle hobbyists (at least the particular road and MTB tribes I run with) can get really obsessive over equipment, and there's strong peer pressure to have the latest and greatest. I was always a little skeptical of this, though I wasn't above occasionally falling into the mindset (e.g., my mountain bike is probably a lot nicer than what I need for what I ride). Becoming more frugal made me understand what about biking I valued (improving my fitness, seeing nature in a new way, challenging myself in a fun way, just enjoying the experience of pedaling for hours on end, etc) and what I didn't really care about (shredding super technical terrain in the fastest time possible, super technical terrain at all, huge jumps, racing, etc). It's a lot easier to ignore the latest and greatest when I have that understanding to evaluate it with.
