I have decided the autopilot mentality is the aspect I most dislike about humanity. Instead of evaluating a situation, we humans (I said we, I'm including myself in this, I do it too) make snap decisions and stick with them just because an aspect of the situation fits what we have already decided we would accept or reject.
"Let's change to this new way because it is new!"
I can't count how many people I know who have taken their perfectly fine computer they were happy with and upgraded to a new system they hate, just because it was new.
"Let's stay with this old way because we know it."
That misses out on a lot of new stuff that really is better.
"Let's do this because it is different."
Never be different just for the sake of being different. Only be different when different is better.
"I like that song because it's in (random) style, and I know that movie will stink because (actor) is in it."
Well people like what they like, but you're going to miss a lot of great songs and movies. (Though if it's a Michael Bay movie you already pretty much know how it will go...)
We cruise through life accepting or rejecting situations based on what we have already decided we like and don't like. We don't see the new situation, we only see the aspects of it that fit our hardcoded response templates. This causes so much trouble, so many missed opportunities and so much loss.
The only way I know to fix the problem is to be conscious of my own reflexive reactions and slow down and actually LOOK at a new situation. But I haven't figured out how to make the rest of the world do that.