Delicious, Please take a little while to make your decision. I too went to school in the deep south and went through rush for a lot of the same reasons you did (although I had always wanted to go greek, I knew no one at the school and wanted to make friends fast). I will admit that I was not very close with most of the women in my pledge class, but I made lifelong bestfriends with other women in the chapter. Your pledge class is only a small part of the whole. There was a time when I thought that none of the sisters had any respect for me b/c I ran for several offices 2 years in a row and got elected to nothing, but I kept pushing and when the VPE had to resign her office I ran and got elected. I made the best of it and now it is truley a VP position in our chapter...The moral to that is that your sisters obviously think highly enough of you to elect you to hold positions within the chapter so there has to be something there. Work with that at first. Focus on the incoming NM class as others have said that is where you can turn the whole chapter around. I've said it before and I will say it again...nothing will ever change if your not willing to take action to change it (and no one said it would be easy).
Please don't quit. I know I would have regretted it for a lifetime. Consider just taking a break from going to events and stuff for a few weeks and see how it goes. If none of this helps if you can go alum do it, but make that your last attempt. PM me if you want