Honestly, I do regulate my language with certain people to keep the peace, otherwise I don't believe in "cussing".
Cussing, or cursing, is basically derived from taking god's name in vain or some moral issue within christianity.
I'm not a christian and even when I was one, I realized that most "cuss words" are considered so by man. I've never read in the bible that "thou shalt not say (fill in a four letter word)" and therefore don't, and haven't for a while, adhere to watching my tongue.
Tis better to be a nut than an empty shell.

http://www.frappr.com/expentecostal