How about to just be forever young?
Yea, sounds good, but imagine this. You can be forever young, even immortal, but you have to live through the same day over and over again, like in Groundhog Day. At the end of each day a time machine brings you back to it's start. Would you go for that

I'm guessing after a few years you'll run out of regular things to try and you'll go over to the dark side with activities that are...against the law. Basically after some years you'll feel like in hell.