What is posted above isn't necessarily my personal undergraduate experience. Actually, what I listed were the main traits that can be gained from one group or many (depends on the type of group LOL).
But the point was that I could totally see how a non-greek could feel that way - especially given the fact that many campuses offer SOOOOO many types of outlets of extra-curricular activities that will allow students to gain those skills sets listed above without (and I'm quoting IotaNet here) "going through some changes that might affect your GPA". I would agree with previous posters about time management, because it is an important skill. However, if you're already attending classes, studying, active in another group(s), spending time with friends & a SO, working (ie a job or work study), I think you're already learning that lesson and how to do it well.
Again, not saying that BGLOs are bad/evil but I am saying that there is validity in the thought process of students who feel that way - especially if a high GPA is what brought you to college in the first place (academic scholarship) and without it, you couldn't afford college otherwise.
Anyway, just trying to present another POV. Thanks for listening.