This almost feels like a trick question...
If I had to live the exact same life without ability to avoid mistakes, I wouldn't kill myself because that would put me in a time loop where I always end up being suicidal.
Although my life up to this point has been pretty good for the most part, and it will probably be miserable from here to the end. So maybe I'm actually better off reliving the happier half of my life. The question would be what happens if I stuck with it until natural death, would that break the loop?
It would really suck if the universe worked that way, now I have a new after-death nightmare scenario to worry about.