Here's a little more downbeat one, written many years ago by an old friend who had recently been "dumped." (He never performed it much because the bar owners didn't like him to. They wanted the customers to leave feeling good.) And of course it predates the present stronger taboos on drunk driveing:

ONE MORE MADMAN
(Dick McCormack)

All the glasses are gone off the table
All the customers gone from the place.
The music's gone out of my fingers,
Like the color's gone out of my face.

Tonight I'll just turn off the headlights
And drive by the light of the moon.
'Cause these days, sleep comes slowly
And the God Damn morning comes too soon

(Cho.)

I'm only one more madman,
Saying "goodnight" to the bar;
Who carries his load only barely,
And his dreams just a little too far.
Who finds something novel in losing
And romance in being alone
Only one more madman
One more drunk going home.

There's a look in our eyes of knowing more than we're saying.
Oklahoma dust left on our shoes.
Kerouac and Rimbaud sticking out of our back pockets,
New York streets and the poetry of the blues.

But you get tired of this romance of decadence,
And the second-hand life we live on loans.
Tired of waking up with strangers,
And sick and tired of waking up alone.

(Cho.)

A madman is someone you write songs about.
A madman is something to see.
A madman is someone you can love from a safe distance,
But a madman ain't nothing you'd want to be.

So here's to us all, goodnight ladies,
We are what we are when we're alone.
Here's to us bums with our guitars,
And here's to you drunks going home.

(Cho.)

(Repeat last 2 lines of Cho.)