Does the cover matter?

Every single person who has had the fortune of going to a decent school must have been taught (in different language and context of course) that one should never judge a book by its cover. Fact that the exterior doesn’t always represent the interior is the basic premise behind the adage.

Apart from few people who actually read books because they have pretty covers, this saying doesn’t involve books at all. More so importantly it is about people. The cover here symbolises the exterior, the looks of a person and the content of the book, a metaphor for the personality of the person. How much are we influenced by how a person’s looks while making a judgement on them? For pretentious snobs who claim they don’t judge other people, I would say this article is not meant for sublime humanoids who are beyond the humane follies. For others the question persists, how much importance the cover hold when we no longer talk about books?
Living in a world, bombarded by pictures of false perfection, do we put too much judgement on some factors which a person rarely has control? This thought has been generated by a rather unfortunate incident in which I chickened out of a situation just because the other person involved was not that much of a looker (actually it is much more sinister but hardly writable). The fact that I never gave the contents any chance doesn’t make me a very good person. Can it be that when it comes to the matters of the heart, looks are the most important thing and personality something second in line? Is it a person’s fault he/she does not look very good? Yes a person does have some control over the appearance but save plastic surgery I don’t see any drastic steps that can make anyone look significantly better than what they are.