C'mon now, even I'm not folding Kings pre-flop and I'm as nitty as it comes. If you're up against A-A, so be it. More often than not you're way ahead of his range, even if he is really tight. Many times I've been against a villain who has a 3-bet % of, say 3%, but when I look him up he's 3-bet/shoving as low as 9-9+ and A-Q. This is the micros after all. You are NEVER behind his range.