assuming we are up against 2 worse pairs then we are a big enough favourite.
the only reason you"d fold is if you felt unlucky, but in that case you"d have probably given up poker by then.
If we are using the "I"m not coming all the way to vegas to lose in the first level" argument, I"d counter it with the "I"m not coming all the way to vegas to fold Aces preflop" argument