I'm in this same boat with you thinking that this might start fading. I'll say this, I have no problem with people doing crossfit, if that's what they like and gets them exercising then that's great. Personally crossfit is not for me, much like running is not for some people. I joined a CF gym several years ago for a month or two and stopped going. A year or so later, late 2012, I decided to give it another shot as I thought it would help me train for the Goofy Challenge in 2013. I went for two months, and like many others, hurt my lower back right around Christmas before the race. Looking back on it, I just don't think that it's necessarily the best idea to be doing all of the "WOD" activities as fast as possible. I'm sure there is a science behind it, but to me it just seems there is just too much risk of doing things like that.
The other thing that hit me was the monthly fee, I was paying $160 a month here in Atlanta. I know there are other gyms/"boxes" that charge way more. Sorry I didn't mean to continue this as being a "bash CF" thread, just stating a couple thoughts I had.