It really depends on their backstory. Most of them come from some sort of abusive family, so waking up as someone with royal blood and money for days? I wouldn't want to go back either lol (but tbh I'd wanna go back after a week since Internet isn't a thing and I've got pets to take care of!!) anywho, dunno about the rest
Yes i also thought about this point! Tired enough to not want to live in modern society but honestly there would be little stuff that I would miss because i just think that's natural especially the place they reincarnated too is also unequal ╮( ̄▽ ̄)╭ it makes me curious that it's completely not mentioned at all

I always wandered why some of them don't feel like they miss home? Especially the culture and their old relationships. I said if it was me i would miss the music, food, family (even though like her my family wasn't great i would miss them). But unlike her when i find myself with resources like wealth and i see inequality i would feel extremely uncomfortable and would attempt to defy the noble status to help those kids in some way? But I recognise that in these stories you're focusing on survival i just can't ignore it or act cold like those noble attitudes