Why do you not like tourists?

I live in Las Vegas and you know what kills me...tourists especially the ones that dont believe in, HELLO GPS! or the ones that find the strip to be so "beautiful"ewwww. any way, what i m getting at is why do tourists act so happy!? i know i sound so "loserish" but really, where do you live and why do you not like tourists. PS if i visit somewhere, i hate acting like a tourist and point at every little thing any way, i am not a hypocrite