First of all, no one can travel to the future unless they are returning from the past. Everyone who’s anybody knows that. It hasn’t happened yet, so you can’t go there. You can’t go sometime if it never occurred.
One-way time travel sounds ominous to me regardless of direction.
You mean I can’t come home? Ever? I have to go forward or backward and it’s a final decision? Without any hope of returning to my time, my friends, family? My world? In which case, no thank you. That’s too high a price to satisfy a bit of curiosity.
With all the issues of the present, this is my time. It is where I belong, for good or ill.