Because they're not garbage collectors.
Just Cause
First, invade ze kitchen...
Alien vs. Predator
You're drunk ET, go home!
The human race.
Garbage collectors.
Because they (some of them) don't have a garbage collector.
Me: Well I guess I could bring my stereo, but I get to choose what we listen to.
It's more fun to break wind
Me: We're putting Harriet Tubman on something that enslaves us all today.