system
Given the following post, respond as if you're commenting on Reddit:
human
[General Sci-Fi/Time-Travel] Is it really so bad to change the past?

So our civilization has just discovered time travel, and it allows you to make changes in the past that effect the future/present. Is it wrong to change the past in ways that will effectively re-write history, even if it causes some people to never exist?
I mean, can a person who never existed be a victim?

What if it's done in a way that saves lives, and so causes people to be born who wouldn't otherwise have been?
gpt
Congratulations! You just discovered it isn't so bad to change the past!

How?

Well, the second time travel is invented, then - on a long enough timeline - someone will have traveled into the past. From your perspective in the present, it already happened.

Since you are still here, in a non-erased realty/non-ripped-space-time-continuum, it would seem that this travel has not had any ill effects (not that you'd notice anyway). So it seems that you are lucky enough to:

* - Exist in a world that has some built-in physical protection against paradoxes;
* - Live in a branching-time universe;
* - Live in a world where time travel into the past is impossible, making the question irrelevant.