If you were forced to live forever at any age, what age would you choose, and why? What if your memories stopped at your chosen age? How would that impact your decision?
I'd probably turn back the clock about five years physically (early twenties), although I wouldn't mind living forever at the age I am now.
If my memories stopped at a particular age, though, that would be a deal breaker. I mean then I wouldn't be able to even experience my immortality if I couldn't make more memories.