I have too many and they're all expensive. I probably should've taken up poker or something that can earn me money without needing a ton of expensive equipment. Or, I dunno, competitive Nokia Snake.
I'd like to collect more vintage computers. As usual, collecting anything vaguely valuable always comes with the knowledge that you should've started it 10 years ago. So that's a nice demotivator. I don't have the space for more, anyway. I enjoy my time spent on them no matter which one, although I begrudge the time spent dicking around with simple jobs on cars that quickly become complicated.
No time spent doing something you enjoy is really wasted, I don't think so anyway. Procrastinating and wasting time are two different things.