Well, im an only child and i like to do everything by myself really (sad i know, lol) So in boxing, you do bag work, speedbag work skipping running, lots of lonely stuff, apart from padwork the only time you actually have to interact is sparring, and thats facing an opponent so.... Where as MMA, well in my class anyways, your constantly working with someone. Whether its doing drills with someone, or rolling or what, i just found it annoying whenever hed say "grab a partner" and id be like "umm, you wanna work with me?" to the closest guy. Just hated it. Suppose it was better if you went with a friend but thats just me.