Donnie learned from his white suburban upbringing how dark the world can be. At least he thought so. He rebelled and lit bon fires and listened to goth rock loudly to show the emptiness of his soul. Then he met Harvey.
Donnie spent hours whining about the meaninglessness of life, the despair of reality, and most offensively, the hollowness of beauty. Harvey lost his head a bit over it and used a prostitute to lure Kirksmith into to an abandoned alley. There he drained him dry, and embrace him out of spite.