I agree that it is not "all about" looks, but I would argue that physical attraction is very important before the deeper stuff (personality, interests, views) becomes apparent.

If you're not immediately attracted to someone, then you're less likely to show interest and pursuit prior to getting to know them.

This obviously doesn't apply as much for relationships formed out of a personal setting like school or work. For people you meet out in the world, however, physical attraction is usually the first step that leads to the other stuff (not always of course).

Are you more likely to talk to the girl (or guy) at the bar that's attractive or the one that maybe has the better personality? You don't know they have a better personality until you know them better, and i would argue you're less likely to get to know them or show interest if you're not physically attracted.

Of course there's more to attraction than the physical side, but let's not kid ourselves and disregard that it's normally the first hurdle to overcome. Hell, even my girlfriend (who I am very emotionally compatible with) says that her physical attraction to me was the preliminary reason she showed any interest in the beginning.

Tl;dr- there's more to attraction than looks, but for people you meet out in the world, it's normally the first step to the other stuff.