I'm sure learning English as a second language would be tough if you didn't put at least some time into learning all aspects of the language, including slang and profanity. That said, I find profanity in any language to be rather useless. For me, it's a matter of exerting some control over myself. I can't seem to do it with food, exercise or anything of the like so I compensate by not using profanity. Lame, I know.