The concept that we do things based on our emotions will strike a certain type of individual as wrong, simply because they've become so used to looking at things like a machine.
To that person I say: you are doing it right now. You are doing things based on your emotion, and it doesn't always feel... good, but it is how humans work.
Humans are highly evolved organisms, and our emotions emerge from a vast collection of observations (both conscious and unconscious) made by our nervous system. Especially important is the unconscious aspects of emotion. We can often tell things are rotten before we can describe why.
Trusting our gut is underrated.