Profanity: Evidence of an immature mind trying to express itself.
Check this out:

Many adults go through a phase in their younger years where the use of foul language is cool. Up until about 15 or 20 years ago, maybe even more recently, four language was called objectionable language.

Yet in keeping with the overall coarsening of our society, language standards seem to be going the way of the dodo. Nowadays, you’re considered a prude if you use words like “heck” and “darn”.