If I'm doing something in public that seems strange, chances are that pointing it out to me is not going to make me stop; actually in most instances I'll likely invite you to join me. I've learned that I'm probably going to be laughed at or looked down on by someone no matter what I do, so I might stand out and look like the freak I want to be while doing it.
I think I'm an absurdist, or an existentialist something or other like that. I don't think there is any particular ultimate purpose or meaning to my, or anybody else's existence, other than what we people assign to it. My purpose is basically to do whatever it is that I might want to do, be it short, or long term, self indulgent or charitable.