Why is there a song written about it?

There is? I just thought it was a funny saying...

... existentialists ...

Do it pointlessly.
Funny shirt I saw once.

I've wondered that for YEARS!!!!!!!!!! Lost sleep over it!!! I finally was able to stop ruminating over this and HERE IT IS AGAIN, IN MY FACE!!! Yet MORE lost sleep over this poser!!!!!!!! Thanks!!!

because we really do care ????

Not to be an a$$, but I belive the song was, "Jimmy cracked corn and I don't care..."

Which would indicate that they really did care... the song was just a front.

Mom always liked Jimmy best ...

So, Jimmy cracked corn and I don't care, really means, Jimmy cracked corn and I do care?

When I was young I used to wait
On the boss and hand him his plate;
and Pass down the bottle when he got dry,
And brush away the blue tail fly.

refrain (repeated each verse):
Jim crack corn and I don't care,
Jim crack corn and I don't care,
Jim crack corn and I don't care,
My master's gone away.

In the two verses that follow, the singer is told to protect his master's horse from the bite of the blue-tail fly:

An' when he ride in de afternoon,
I foiler wid a hickory broom;
De poney being berry shy,
When bitten by de blue tail fly.

One day he rode aroun' de farm,
De flies so numerous dey did swarm;
One chance to bite 'im on the thigh,
De debble take dat blu tail fly.

The horse bucks and the master is killed. The slave then escapes culpability:

De pony run, he jump an' pitch,
An' tumble massa in de ditch;
He died, an' de jury wonder'd why
De verdic was de blue tail fly.

The reference to a "jury" and a "verdic[t]" does not imply that the slave was charged with any crime. More likely, the writer refers to a coroner's inquest into the death.

They buried him 'neath the sycamore tree
His epitaph there for to see
"Beneath this stone I'm forced to lie
The victim of a blue-tailed Fly."


-wiki

... My IQ just went up 2 points from readin' this ...

Wait a minute. At no point does it ever say "Nobody cares." It only says "I don't care," i.e., the first-person narrator/singer, who can only truly speak for himself.

I'm guessing that this person knew others WOULD care; would care deeply. Deeply enough to start a multinational conglomerate for the purpose of cracking corn, and caring about those who do.

So it was a marketing ploy.

And it worked, because here we are 1247 years later, and we're still talking about it.