I would cry for any person so locked within their own life that they could not approach another person and say 'hi.' Who knows, could have been the best day of their life up to that point. Or they could have used a friend, and some tips.
Sometimes, thinking I'm all that and a bit more, I sit in judgment on what's going on. Then I think. Wow, perhaps this is these kids (almost grand kids to me now) very first most favorite band ever. Maybe this is their first concert, their first time in the sacred confines of the Fillmore and that I might think it sucks will never matter to them, and should not to me, so I get to work making it even better for them.