The TL;DR of the following: Please check the other reply.

I went over that. If you went in with the intent to change the future, you’ve committed to changing it. There’s literally no purpose to what-iffing the after effects, as (a) if it drives you to utilize time travel to prevent that, you’re still doing something vs (b) the same risk is inherent in the initial timeline (something vaguely connected to your choice ruined or ended a life that wasn’t your own).

If it works, depending on the time travel involved, you are unlikely to know either way. If you spawned a timeline where you’ve caused a possibility, the ‘you’ that went back isn’t a part of it, because that ‘you’ didn’t experience it. Alternately, if the ‘you’ that went back gets fully overwritten by the new experience, you have no idea any time travel happened and are living your (changed) life as normal. Third-string, if ‘you’ get merged with your new life, whoopie, you probably have an idea how to keep changing the past as you want.

Whatever the case , the r/GetMotivated point comes down to “if you have time to worry about a hypothetical, you have time to shape the future to your will in the present.” Anything further concerning time travel is better left to r/timetravel .