Man's unhappiness, that's the disease, and we haven't been able to cure it, no matter how many millennia we've tried. Manhattan taxi driver Jose Martinez expressed the same idea in more prosaic terms. We're here to die, just live and die. I drive a cab. I do some fishing, take my girl out, pay taxes, do a little reading, then get ready to drop dead.
Life's a big fake.
You're like the wind. After you're gone, other people will come. We're gonna destroy ourselves, nothing we can do about it. The only cure for the world's illness is nuclear war wipe everything out and start over. We see the homeless, their cracked and dirty palms cupped like dead cats, their eyes glazed with the disconnected stare of those who have seen things that would make demons quiver.