I have found the opposite to be true. Although I routinely flung the F-bombs when in college, and even a while after, I finally did mature enough to stop. I think that anyone over 30 who still openly uses F-bombs in casual conversation is akin to anyone over 30 who is still a Democrat; pretty much a sign of immaturity. Media have definitely increased the prevalence of F-bombs by people, but it's still a sign of immaturity. (and a pretty good correlation between those who use F-bombs and those who smoke)