I was hoping that I wouldn't spark a CrossFit debate, but let me try (probably futilely) to defend myself. I was initially skeptical of it, especially given all the vitriol directed towards CrossFit on the Internet. However, they offered a free trial workout, so I figured I didn't have anything to lose. With lots of free time this summer, I wanted to increase the intensity of my workouts in preparation for OCS. As an exercise novice, I was enticed by the prospect of more personalized training rather than trying to figure things out for myself.
My experience has far surpassed my expectations. Contrary to what I had feared, the trainers are supportive and enthusiastic. I'm never encouraged to push myself harder than I am able, and the focus is always on proper form and preventing injury rather than getting the "high score," either in reps or weight. Maybe my "box" is just different from the norm, but if so, then it is different in a way that is working for me. In addition, several of the other participants are active-duty military (O-5's, mostly) studying at the nearby Army War College, which is a great networking opportunity for me.
This may also have a lot to do with my fitness background (or, more accurately, lack thereof). It wasn't until my late 20's that I started taking my health seriously, and not until my early 30's that I ever set foot in a gym. Working out at CrossFit has been the first time I have even touched a weight lifting bar since high school gym class (when I couldn't lift the bar, the gym "teacher" sent me to the library). I'm getting up early (classes start at 6am), challenging myself with a wide variety of exercises that I've never done before, and learning more about the military and military life. Seems like good preparation for OCS to me.
If you'd like to hash this out more, feel free to send me a PM, I'd hate to derail this thread any further.