I agree with Senusret... who has the time? If you're serving in your NPHC org to the fullest, then there really isn't much time left over for other groups. I know that after joining AKA, I was initially a little overwhelmed (in a good way, of course!) by the sheer number of service activities and committees in which I could participate.
While I think all of the orgs you listed are valuable, if you're devoted to your sorority or fraternity, there just isn't time for them.
But I'm just a neo, so what do I know?
