I'm not sure if you mean a round trip or one way, I guess a round trip would technically be time travelling twice, so you must mean one way. I've always thought of the past in a very romantic light, like 100-200 years ago, and would love to live there, except medical care was very crude and limited back then compared to nowadays, which makes it scary. I'd love to see what the future holds (like 50-5000 years from now) even more than I'd like to visit the past if it were a round trip, but not if it's only one way without knowing what the future will be like ahead of time, especially when in all likelihood it will be much worse, and that's if humanity and/or civilization will even exist at all. Though I could also go to the past to my early childhood and see if I can get myself taken away from my parents before they royally fuck me up for life.