Okay, errant, I hear you...but theologically speaking 'n all:

Say you pick your nose...(as an example)...this is a natural instinct, right? "I got summing in my nose; gotta get it out!!"
But someone sees you do this. And they think that you're a disgusting slime bucket because of that...doesn't that affect who we are?

(I know that is a little extreeme; but think of other examples like that...)