Yes, Some women only care about looks, but by no means all of them.
I don't feel that you were blown off, she may have thought you did have class on Thursday.
My fiance is very attractive, petite, red head, not overweight, looks about 20. (she is a lot more than just looks but that's what this topic is about). I on the other hand, Look much older than I am (and often get mistaken for her father), I'm bald (not by choice), have a bit of a pot belly going on, have missing teeth, already had kids, poorish (we get by, just) etc.
Despite this, I am a good catch, I am funny, I am honest and faithful and she is happy. And you know what? She was worth waiting for. There are no games, no drama.
If girls do turn you down for superficial reasons, it is their loss, not yours. You want to be accepted for who you are.
But by all means try and better yourself, I did before finding my fiance and not only did it help my confidence it did in fact make me a better catch. When I say better yourself, I don't mean become something you are not. For example, you have to lose weight because it's what you want.