since hair color and eye color don't affect intelligence nor personality, why are people so obsessed with them?!
Answers:
We're not.
Vanity! People cannot physically see personality and intelligence with their eyes, and many people consider appearance, and what the eye can see, much more important than any inner qualities. Take a look at the ladies of Orange County for example. Not a braincell to rub together between them. They all look the same! Fake orange skin (the place name is quite apt really lol) frazzled bleached hair, fake nails, fake boobs etc... :-)
Learned behavior, from family and peers.
No one is except you.
why are you ATTRACTED to the person you like?