The whole "you can fix things, but can't get the last 5 years back; that would just create an alternate timeline" was stupid.

I think they were trying to subvert the time travel trope, but it just created a bunch of dumb paradoxes like how Captain America was able to stay in the past without creating an alternate timeline.

In the original comics, Nebula gets the gauntlet and brings all the dead heroes back to life, which would have been a fine ending for the movie.