Is 'Yall' Really Such a Wierd Thing to Say?

Before you guys ask, no, I do NOT have a Tenessee twang, (No offense intended to all those Tenesseeans out there. I love yall!) but I moved to Tenessee when I was like, nine, so I picked up the word there. Anyways, so I moved to Seattle, Washington about a year ago. (God, it really HAS been almost a year!!) So my new friends have recently pointed out to me that I say 'yall'. Honestly, I've been saying it for so long that I didn't even realize... But now every time I say something like, "Hey yall," or "I'm going to sit over here with yall because they're talking about-(ANYWAYS!! besides the point what they were talking about.)." they point it out. It doesn't make me mad, if yall are thinking that it does, because A., It might be payback for pointing out my friend saying PWNED all the time, and B., I know they're just joking. But is it really that wierd?? Jeez, you'd think nobody in Seattle has ever heard the word 'Yall' before...