Why is it that some people here think their shit dont stink.

I responded to Lindaisfun with a question on laser hair removal. I inadvertently replied via private message and got a whole rash of shit from her even after I apologized for pm-ing her as I thought it a personal question for her and not off topic. Are people that full of themselves that they cannot be civil about it. This is not the only time I have come across people with attitudes unbecoming of the human race. To these people I will not even give the time of day. They are just not worth it.