.... (For rifles, why would you clean a Glock?)
What is this cleaning of which you speak? I shoot Glocks. I reload Glocks. I shoot Glocks. I reload Glocks. I shoot Glocks. I feel sad that I have run out of ammo and go home.
One word: Boresnake. It will change your life. (For rifles, why would you clean a Glock?)
Precisely, they're ugly when clean or dirty.
It would be like washing paper plates. If they are too dirty to use, just toss it and get another one. Save the cleaning and maintenance for something worth keeping.