Why is it that some people don't wipe down their machine at the gym after using it?

Do they not know?

People watch me do it.

I wipe down the machine before and after. There were 4 other people there and no one wiped shit down. This is a consistent problem at my building's gym. (Both men and women of all ages)

I don't know about everyone else, but I sweat and spit on my machines. It gets pretty gross. I also wipe down matts and bicycle seats.

Are people ignorant? Lazy? Or have an allergy?

I need to start saying

"Dude wipe down your machine!"