Type II Fun – fun only in retrospect, hateful while it’s happening

Is type 2 fun a good idea? I haven't been able to decide for myself. I'm never sure whether doing these sorts of things has actually been a good use of my time. It probably helps me grow or something, but God does it suck a lot of the time.

Another theory: type 1 is fun now, type 2 is fun in hindsight, type 3 seems like it would be fun looking forward but turns out to be awful.