Folding KK preflop?

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You see these guys do this with random PPs, AK/AQs and what not.

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Yeah but that's the thing, I don't think I've seen decent players push/3 bet QQ or JJ more then AA against a tight nit ( [img]/images/graemlins/grin.gif[/img] ) like me here.
Maybe I've just been lucky be shown aces here? [img]/images/graemlins/confused.gif[/img] But like I said earlier I've only folded em 3 times out of 98 preflop so personally I don't think I've made THAT big of a mistake. Just wanted to hear your thoughts on this, I aprecciate the comments and input!
Thanks!

Rob [img]/images/graemlins/laugh.gif[/img]