i always get a kick out of how HN people talk about their "side projects" rather than their "hobbies". just let your hobby be a hobby instead of turning it into a pseudojob.
For me it's not a pseudojob, I code tools for myself to help me in my endaevours. Perhaps I will publish some someday, maybe I won't.
seriously
hobbies can be serious! i take all my hobbies more seriously than my career at this point.
but they're for fun.
Firstly - because I'm an introvert and I more often feel like doing something interesting or necessary alone or together with my spouse, secondly - this list is not really sorted by my priorities, I actually put my education (which mostly is self-education in areas mostly unrelated to my job) much higher.