Oops, you're looking at it all wrong. This is why reading the player, betting patterns, and general play styles are important to pay attention to.

If you have A8 and the flop is 832, and the rock of gibralter moves all-in, that's a clear fold most of the time.

same situation: Loose fish goes all-in, i'm probably calling.

you're ability to win the most and lose the minimum with 1 pair in hold'em is a critical skill.