I was for a year or two while I was in college. I stopped because it felt like I was paying the membership fee for the privilege of possibly paying a second membership fee for one of the field-specific organizations... for what I still have no idea. Several years post-college one of my fellow classmates noted to me that he stopped his membership as well, and for similar reasons.

In the last year or so of college I was asked if I was interested in joining the Society Of Women Engineers [SWE]; engineering activities for Girl Scouts, field trips to engineering-related museums, actual stuff going on. I'm now a lifetime member. Once in a while these days I go to an event or meeting. I enjoy the magazine.