Some folks have more grease than others.
Excess grease was gold back when film photography was alive and well. Got a scratch on a prized negative? Just swipe a finger across your nose, and rub that nose grease into the scratch. Grease fills the void perfectly, and closely matches the refractive index of acetate - hence the white scratch lines disappear from your enlargement prints, like magic :) Of course if the scratch went through the emulsion side (showing as black lines in enlargements) you’re still screwed.
Nitrile gloves should be good for handling tubes. Nice grip. But I am totally against use of cotton gloves!