Don't looks scientifically do matter?

Looks aren't really important to be honest. It's not like its going to make a relationship last, or anything. Looks are mainly what can cause a person to like you, but also personality is. In my perspective a guys personality is much more important than his looks. :-) for example, just cause a guy is good looking doesn't mean he's all that smart/nice. He can be a total knobhead for all you know. But anyways looks aren't always anything. :-)

Yes. But they are not everything.