Umm, I do enjoy the things you mentioned (building new stuff, experiment with new tech) but I love doing that on my free time, without pressure, deadlines and bosses.

At work, though, I love: boring stuff I can deal with easily, long epics that end up in features that are barely used (so, no big deal with critical bugs, also no need to be on call). At work I can be done in 4h and call it a day (which gives me TON of free time to experiment with new tech, keep my cv up to date and even fantasize with making my side projects profitable).