First off, before we beat ourselves up too much, the emphasis on looks isn't just a Greek problem, it's a HUMAN problem that goes back to the dawn of man. Survival of the fittest and all that rot.
I do agree with what Allie said about like attracts like, and vice versa. Part of the reason I didn't choose a certain sorority was because I felt like I would never measure up to the rest of the sisters as far as my looks were concerned. They are fabulous girls and I'm friends with some of them to this day, but I would have never felt truly comfortable there. The reverse applies too. How much would it suck to be the most jaw-dropping beauty in the sorority and have everyone be jealous of you because of it?
We've taken girls who fall far short of the "conventional" standards of beauty, but more than make up for it with brains, campus involvement, and great personalities. We've rejected girls who look liike models, but had such rotten attitudes and lack of interest we couldn't wait to hustle them out the door.
I also agree with what sigmagrrl is saying. To say 'well, the prettier girls always get picked & that's just how it is"is a copout. Maybe you have a not so physically pretty friend who would be a great sister. Stick up for her! Introduce her to sisters outside of the craziness of rush so they get to know her qualities like you do. Yes, most of us do rate rushees partly on "appearance" but that is not supposed to mean supermodel - it means that you make the most of what you have, dress nicely for your figure, and carry yourself well.
To make any changes in this everyone has to truly believe what's inside is what matters, and unfortunately that doesn't seem to be happening. I've heard of chapter consultants and national officers bitching at chapters because they took "undesirable" girls. It's kind of hard to change the "pretty counts most" mindset when it is coming from the top down.
And as far as the guys having it easier - NO WAY!! As a matter of fact, I think it's harder for guys because a lot of times they have the pressure not only to be good looking but athletic. We feel your pain, guys!!