I swear a little bit... but I'm much less likely to in personal or social situations.
I usually stick to much less stigmatized words like "screw", "crap", and "damn".
Most of the time, the whole idea of emphasizing statements with cussing just doesn't work for me.
When someone starts swearing a lot in a discussion/arugment, I don't really want to listen to them anymore, because I just assume that they've lost control and probably won't say anything valuable from that point.
i get really offended when people say X because there really are X people out there... and that's just plain disrespectful.
Perhaps it's just me but in relation to swearing and generally being insulting this sentiment made me smile.
The type most prone to swearing is the engineer. Well the lot that I work with anyway. The swearing they use runs the whole gamut from racial to sexist and is used as punctuation by everyone from the youngest to the oldest. Oddly enough Lori has started working with engineers more recently and unlike myself, I still rarely swear unless for a specific effect, she's picked it up quite well and can do a respectable annoyed sailor impression when wound up enough.
Anyhow in terms of MBTI I'd have thought that ESTJ would be the most prone as they tend to be stress filled people, or so I've been told.
I swear when I bang into something by accident, or if I'm pissed I'll go into my room and swear, but I NEVER swear at someone in person. Probably because I was often on the receiving end of that growing up - when my dad got angry he would go into extremely verbally/emotionally abusive rages. (Needless to say, I was ecstatic when I finally got to college.) Basically, I swear occasionally, but I won't ever swear AT someone.