I thru hiked the Appalachian Trail in 2010, from Georgia to Maine. It took 5 months, and I lived out of a pack and in my tent for that time. It was a truly amazing journey, though parts did suck. I was in great shape, felt good, didn't need meds. I met a lot of "unconventional" people doing stuff like that.
I still walk a lot, I am back home, studying, going into my senior year for a chemistry degree. I miss the trail a lot, and after I get out, I'll get a job, and pay my loans off, and see from there. I do like chemistry, but I've never fit into regular society, and consider most of the things people see as responsibilities to be a tedious, pointless waste of time. The good thing is I'm a minimalist, and own barely anything, so this life would fit me.