Out on the street no, in class yes many of times but we usually stop before we get too far....like I've said before my martial arts master is truly crazy and believes we really need to know what a punch, kick, chop etc really feels like from both ends. Have stopped a few fights using Aikido since you just put them in a pin quickly and that takes all the fight out of them.
I wouldnt call myself a fighter I usually dont start shit with anybody, but ive fought before because sometimes guys like try to start fights with me lol in which case i act but I don't start fights or arguments with random ppl
i dont fight as much anymore but it depends on the situation really. now family friends partner then hell yeah i will throw down with anyone to protect them. some punk talking shit i laugh at them and walk away not worth what little effort it would take.