I'm getting pretty tired of going to concerts and having people behind me complain that I'm too tall. Yes, I'm 6'3". No, there's nothing I can do about that. But if you're stuck behind me and can't see the stage, you're out of your mind if you think I'm gonna give up my spot for you. You should've averted the problem and gotten there earlier. Or, even better, you can step 4 inches to the left or right so that I'm not blocking you.
This is your problem, not mine. So leave me alone.