The short version to the question "Why Do Minimalist Cross Training?" is meaningful training with minimal equipment. I believe the biggest obstacles to maintaining any fitness plan are having a place to train that's close, convenient, cheap, and free of people watching you train.
I've never had a serious weight problem or been seriously out of shape. That doesn't mean that I like to work out around other people. In fact, I hate working out around other people. Especially people that I don't know. It isn't a lack of confidence. I've been in the military in one form or the other for a long time. I've achieved a rank that puts we in charge of lots of people. I'm also a teacher, coach, and in leadership positions at work. I'm also fairly athletic. I can hang with just about anyone my age and many people younger than me in just about any sport. I have no reason to not be confident about myself.
I just don't like the feeling that people are watching me and criticizing me. I also don't like the gym environment and all the testosterone that comes with it. I don't have to lift more weight or have bigger muscles than anyone else in the gym to feel like a real man.
So I do minimalist cross training because I always have a place to work out, I can work out any time I want to, it doesn't cost me a dime, and I don't have to worry about who is watching me. It's also a lot of fun because I'm free to do anything I want to.
I mean, what's better than coming home and being in your gym as soon as you walk in the door?