There's no logical reason to fold this here. You should have probably moved all in without even bothering to raise to 1800 ... however, once you raised to 1800, this is a no brainer call. You had only 7x the BB left at the beginning of this hand as it is, so there is little guarantee that you'd be able to fold your way into the money. If there are 64 players, you're playing 8 or 9 handed, so at two off the button, you've only got a few more hands till the blinds erode another 900 of your stack. Even if you did play tight to guarantee 54th place, you'd have so few chips that you couldn't possibly be competitive for the win, and you'd wind up 51st or close to it. You had the best hand here, got in with a big edge ... a big stack sucked out on you, it's part of poker. Your buddy's analysis is garbage.