If we responded, "because they're artists," or, "because they love the craft," or anything similarly esoteric, we'd be speaking a whole different language. We cannot communicate with the dunce on our terms any better than we can understand why they embrace the Blue Collar Comedy Tour. What we do, is we address their base understandings and make the reasoning practical. To point, we wouldn't tell them music uses a minor key to elicit feelings of dread. You say, "sharp violin sounds put you on edge." The person will agree, because violin makes them nervous no matter what, since you never know what those artsy types will do next.
So, let's take a look at poetry and figure out why those queers (odd fellows) like to use such flowery language when they could just say, "you're pretty. Nice weather is also pretty."
I remember a classmate of mine, when reading aloud (which we still did in high school, did you?) mispronounced "tidy." It was not intentional, maybe, but either way it came out "titty." We all had a good laugh and got on with our story, which was probably Mort D'Arthur and probably had something to do with shriveled up "duggs."
My search for "duggs" was surprisingly fruitful.
In spite of all this, you want a dick joke in your work. Shakespeare was the man for this. To grab an example from Michael Swaim:
Hamlet: Lady, shall I lie in your lap?
Ophelia: No, my lord.
Hamlet: I mean my head upon your lap?
Ophelia: Ay, my lord.
Hamlet: Do you think I meant country matters?
Ophelia: I think nothing my lord.
Hamlet: That’s a fair thought to lie between maid’s legs.
Ophelia: What is, my lord?
Hamlet: No thing.
Ophelia: You are merry, my lord.
Which doesn't sound so bad, and that's what ol' Willie Shakes was counting on. Swaim goes on to explain that "country matters" is a wordplay for "cunny matters." Hamlet is talking about putting the tip in, how awesome it is and Ophelia responds by telling him what a horndog he is.
This sort of "slipping it in" wasn't just something for the 1600's bullshit piety. You can look in the 20th century and find it, like in e.e. cummings "she being Brand." I mean, he could have literally "oiled the universal joint" or meant "slipped the clutch," but I doubt it.
On a related note, you can use poetry to talk about some gross stuff that is, theoretically, acceptable, but in a more palatable way. Donne is a good example of this in his poem "The Flea."
Mark but this flea, and mark in this,
How little that which thou deny'st me is;
Me it sucked first, and now sucks thee,
And in this flea, our two bloods mingled be...
At the time, poets used conceits, which is a term for metaphors strethced so thin you could say they were, "condoms over broomsticks." That's a conceit, more or less.
"stretched condom" did not yield great results.
Another good example is his "Song," which reads,
Go, and catch a falling star
Get with child a mandrake root
Tell me where the past years are
Or who cleft the devil's foot
Teach me to hear the mermaids singing
Or to keep off Envy's stinging
And find, what wind
Serves to advance an honest mind
To put that in common English, "here's a list of impossible shit to do. While you're at it, could you tell me how to make bitches not cheat?" Everyone back then would agree with this idea, but just because you believe it doesn't mean you say it. That's rule #1 of prejudiced humor.
Saying what everyone's thinking is a long tradition of poetry, and sometimes everyone's thinking "wow, that sucks." You can talk about some mean stuff with poetry, and Carl Sandburg saw a lot of mean things in the world. By the way, he grew up about twenty minutes from where I did; and he hated it.
Even though they named a mall after him. Whadda douche.
GOOD-BY now to the streets and the clash of wheels and
locking hubs,
The sun coming on the brass buckles and harness knobs.
The muscles of the horses sliding under their heavy
haunches,
Good-by now to the traffic policeman and his whistle,
The smash of the iron hoof on the stones,
All the crazy wonderful slamming roar of the street--
O God, there's noises I'm going to be hungry for.
That's from "A Teamster's Farewell" and it's a pretty moving piece. Now, your average journalist might have just said, "another mob peon was arrested and it sucks to be him, locked in a cage for a couple of decades." That journalist might also wake up dead, which is to say, not at all. Sandburg frames it with verse and makes it something to discuss. As an added bonus, he died with his lungs inside him.
Which is a lot of why artists do what they do, how they do: no one disembowels artsy folks. This is mostly because people aren't sure if that will kill us weirdos.
-Black Ranger (rhymes with "sack danger")