Sometimes I feel like I'm the only person in the world who does not care about zero-indexed VS one-indexed. It's just the way Lua is, no big deal. Then again, I don't care about significant whitespace either. Maybe I'm just weird.
It bothered me in theory, but when I started writing lua it quickly became clear that it really doesn't matter. It's just another quirk, like significant whitespace: I don't prefer it, but it's so far down my list of language priorities that it basically doesn't matter.