It's kind of a shame that we have such a limited time.
We can't travel backwards in time, but we can travel forward in time. There's this thought experiment in special relativity in which there are two twins, one of whom travels to space on a high-speed rocket and returns home, and finds that the other twin has aged significantly.
If you had the chance, would you take a high-speed rocket to fast-forward a few hundred years? All your relatives and friends will be dead, and you can never go back.