Understanding society's thoughts process?

People change their ways depending on others appearances.

How have we come to this, now I know someone who present themselves clean and collected is more likely to be trusted than someone who’s all over the place and dress dirty.

But when it comes to appearances, why are people so shallow ?

We could see 2 people, a very so called ‘attractive looking one’ and the other next door.

People are more likely to want to know the very attractive one just because they are very attractive. But these very attractive looking could be devil inside and they wouldn’t care to know. Even if they knew they’d be so ‘hypnotized’ and still would want to be with the good looking one.

It sucks because for some, their bodies are their prison. This is it until we die. Experiencing being left out, un-noticed or un-cared for ?

Do these people( including me) have to tell ourselves that the people focusing on the exterior are shallow and not worth dealing with. Is that what we tell ourselves to feel better ? Is there a reason for all this or a even better thing to say to help. It is just our curse for our life?