Can expletives serving as interjections or generic nouns serve a purpose beyond meaningless filler in language?
*sigh*
My position in brief:
Yes, like Lectorog says, it obviously can. Most obvious example: it can serve as emotional emphasis. However,
far more often it exists not for purpose, but as a result of trained thinking patterns. For example, in english we say "I am hungry." Hunger is phrased as something that the speaker "is." That's not universal. In some languages hunger is something that you have, rather than are. "I have hunger."
One might suggest that both expressions mean the same thing...but they don't. They're different ways of
thinking about a thing.
In the case of people who habitually swear, their
way of thinking...in my observation...is fundamentally different from the thinking of people who don't. Swearing generally involves a great deal of vagueness, and the people who swear, I think, think less clearly than people who don't.
If someone says "fuck you," try asking them
what exactly they mean. Anger side,they'll probably have a difficult time describing exactly what they mean. They might mean they're angry. They might mean they don't like you. They might mean if you come any closer they're going to punch you. But all of those things are distinctly different from one another, and people who are in the habit of swearing very frequently
don't think any more clearly or precisely than they speak.
This is made evident when people who habitually swear a lot attempt to not swear. Ask one of them to try it sometime. Generally they will attempt to
replace swear words with other words...but then discover that
they can't, because there either aren't any meaning to the words they're trying to replace, or their thinking is grossly simplified compared to the necessary construct required to actually convey a useful idea.
For example, if somebody says "Oh my god! What the fuck?" How do you express that idea without the swearing? Go ahead, try it. Not so easy, it is? Without context you cannot identify a single meaning. It could mean any of several things. For example, it could mean "I didn't expect this." Or it could mean "I find this unpleasant and disturbing,"
There's no word you can replace "fuck" with to generate either of those meanings. The
thinking being used by the people who use an expression like this is well and truly distorted beyond simple word substitution.
Swearing isn't a problem. It's a symptom of a problem.