i took taekwondo when i was younger, got a black belt, complete waist of time. Boxed for a little in HS but stopped when they wanted me to get serious an stop lifting. My trainer told me to just run and do pushups, fuck that. As far as real fights, i've been in quite a few when i was younger, but all that stoped when some nigga whipped out a gun, then i realized its just not worth it and much better to walk away. Nowadays if i ever get into a fight it'll be only to defend myself or help a friend out.
Let me know how those Krav Maga classes are, i was thinking doing that, bjj or thai boxing once i get out of school. My goal is to have at least one or two NHB fights in the next 5 years, but i'm not sure if my shitty joints will let me get away with that.