If I don't get bored of life then I would change my mind... but I think I would, and based on, for example, old aged relatives of mine, I think they would agree with me even if they either havent said it out loud or haven't realised it themselves.
It is impossible to disentangle "bored of life" from "bored of being old" with current technology. It is very easy to imagine that people pretty freely conflate the two. Put an arthritic 80-year old on the verge of death from any of several conditions popping thirty pills a day in a fresh, healthy 18-year-old body and ask them if they're still "bored of life" in a month.
