why people judge us from our appearance

Yes, it is wrong, but then there is nothing that can be done about it. I ain't a hypocrite who would say that yes there can be this or that to be done. The fact lies in Human Psychology. almost 99% people will bother only in things that interest them. and beautiful things are always interesting. Leave aside human beings, imagine this - A furry white pet well cared pup looks at you and there is an ailing, stinking roadside dog (as you come from India, you can understand what I am referring to) which is wounded and bleeding. You would look at the pet well cared one and say to your friend - oh how cute. And you will probably even not discuss about the other ailing dog. That is how the things are with 99% of people around. Only 1% have a heart and a courage to think and care about the ugly.

Well sometimes people's character get developed by the way they look too. I see beautiful people who aren't models and know they are vain just by looking at them. No I wasn't even judging them but you'll know how someone is just by observing people.

Looks are very deceiving! People do judge them though and sometimes most wrongly.