Doesn't sound like you don't find them, sounds like you ignore them. I used to date a guy that was extremely intimidated that not only did I make more money than him but I had a 4.0 in school while working. We eventually broke up because he forced me to quit my job so he could hang on to his masculinity.

You just flat out said you thought a girl was stunning until she was an economics major at a university. Sounds more like a personal problem with yourself - not the girls you find. Sounds like you don't WANT an intelligent girl. Which typically means you don't like something about yourself, not them. Work on being more secure with yourself. You never have to prove yourself to be more than a woman in any way to be masculine. And women should never have to feel unsexy simply because they are intelligent. Cause I'll tell you what.... I'm a Zoology major and a chemistry minor getting my BS with honors and going on to grad school this fall while working 2 jobs ever since high school. I'm extremely intelligent but I'm damn sexy too!