At least you got the bike back and reasons to get all those upgrades you were meaning to do.
I used to ride my stepmother's Montgomery Ward(defunct store like Sears) 5 speed around campus. Never locked it. Left it in front of the science building for TWO days, then surprise, somebody stole it. That bike was 12 yrs. old, I was kinda curious who was that hard up for a bike.
A year later, I'm studying in a women's dorm lobby with some girls and I noticed the old bike alongside the rest. It had been repainted, new cables, new saddle. Somebody obviously was taking better care of it than me. I left a note on the saddle saying "cool bike, wherever did you find it?" The bike was gone the next day and it never returned. I guess the girl that stole it got a little scared. If she'd asked me, I'd have given her the bike.