I am playing 1/2 NL and have been playing 4-5 hours and have about 450. Several hands have been straddled and this one was. Lot's of callers gets to me in small blind and I see pocket AA. I jack it to 34 preflop and the BB insta calls and everyone else folds. The BB has about 500 and have seen him push his draws hard and hit to build up his chip stack. The flop comes 10 3 3 two diamonds. I bet 50 and the BB moves all in. Why such a big bet? I didn't get it. I mean he could have raised to 120-150 to find out if a hand like QQ, JJ was good. I admit I was scared of pocket 10 10 but no way was I folding pocket AA even having to call 365 more.