I never got all the "don't worry about it, time travel is complicated" in sci-fi. Do people really have that much trouble with it? Or large distances in space,

I never got all the "don't worry about it, time travel is complicated" in sci-fi. Do people really have that much trouble with it? Or large distances in space, for that matter. And it turns out, yes, I'm weird for being able to keep and resolve multiple timelines (and not get hung up on paradoxes), and it actually is weird that I can easily comprehend vast cosmic distances. I had to resist saying "it's just two adjacent timelines offset by an hour" a few times with the recent time change.