No, but... if you could go back and keep them from happening, would you?
You really shouldn't. If they hadn't happened, the world wouldn't be the way it is now. So even though they were awful, going back and changing them isn't something that would normally happen. It's impossible, and you're an outside variable in it all that shouldn't be there.
...It works forward, too. That's what... that's what I messed up. I kept changing things — things that I didn't realise needed to happen. I thought I was just helping the world recover. But... I wasn't mean to have a child. Wutai was never meant to go to war with Junon. Edge wasn't meant to be the way it was, even if it was better off for it. I changed too much.
That's why everything went away. It wasn't a world that could exist, so it just... stopped.

That'swhy it's a conspiracy. It's not immediately obvious.
UN JOUR JE SERAI DE RETOUR PRÈS DE TOI