"Classic Authors"?

O.k. Major question here. Why in the wide world are homeschooling parents teaching "classic" authors, such as Edgar Allen Poe, Nathaniel Hawthorne, Beirce, etc? And why exactly are they teaching that these are "Exelent authors!"
Their writings are sick, twisted works, which have no real value. They lift up ideas that are most definitely negative, they promote depressing thoughts and negative attitudes and they most certainly do NOT bring glory to God.
I don't remember the verse off the top of my head, but I'm sure you know the one I mean, you know, "Whatever things are lovely, whatever things are pure, whatever things are of good repute"? I think in this case the good repute is out of context, as these authors are generally considered brilliant, even though most of them did drugs, were considered for insane assylums and Poe was thought to have died from rabies!
Am I reading too much into what is being taught, or does any of this make sense? The general attitude and thought processes that these stories and poems promote are NOT praiseworthy.
I do believe that things like this should be heavily weighed before being taught, and that it should be evident that the teachers are not suggesting that the stories or authors themselves are good, but that the techniques used are good.
This doesn't make much sense, but what I'm trying to say is that the methods of writing used are definitely good. The writer draws you into the story, makes you feel a part of it. But the stories and authors themselves are not to be even considered as good examples.
If I'm not making sense, or have false logic, someone say so please?

I ain't nothin' but a simple man
They call me a redneck I reckon that I am
But there's things going on That make me mad down to the core.
I have to work like a dog to make ends meet
There's crooked politicians and crime in the street
And I'm madder'n hell and I ain't gonna take it no more.
We tell our kids to just say no
Then some panty waist judge lets a drug dealer go
Slaps him on the wrist and then he turns him back out on the town.
Now if I had my way with people sellin' dopeI
'd take a big tall tree and a short piece of rope
I'd hang 'em up high and let 'em swing 'til the sun goes down
Well, you know what's wrong with the world today
People done gone and put their Bible's away
They're living by the law of the jungle not the law of the land
The good book says it so I know it's the truth
An eye for and eye and a tooth for a tooth
You better watch where you go and remember where you been
That's the way I see it I'm a Simple Man.
Now I'm the kinda man that'd not harm a mouse
But if I catch somebody breakin in my house
I've got twelve guage shotgun waiting on the other side
So don't go pushing me against my will
I don't want to have to fight you but I dern sure will
So if you don't want trouble then you'd better just pass me on by
As far as I'm concerned there ain't no excuse
For the raping and the killing and the child abuse
And I've got a way to put an end to all that mess
Just take them rascals out in the swamp
Put 'em on their knees and tie 'em to a stump
Let the rattlers and the bugs and the alligators do the rest
You know what's wrong with the world today
People done gone and put their Bible's away
They're living by the law of the jungle not the law of the land
The Good Book says it so I know it's the truth
An eye for and eye and a tooth for a tooth
You better watch where you go and remember where you been
That's the way I see it I'm a Simple Man
-Charlie Daniels

So True! An acquaintance gave me this song, and listening to the lyrics, all I could think was, "Why in the world isn't this more popular?!" Then I "remembered" that everything has to be politically correct, and that right and wrong are rapidly becoming things to be determined in the eye of the beholder.
If the people would straighten out the government....... but I'm not holding my breath.