To those who are insisting you just need to wash your hands and dry them instead of wearing a glove, that is just plain nonsense. As any dermatologist, or female, would tell you, there are lots of different types of skin and skin problems. Some people sweat persistently, some peeps get oily skin instantly, others are sticky, some people react to what they ate, and some people live in parts of the country with wicked humidity, etc.. etc..
Now that being said, if somebody wants to wear a glove, for any reason or even no reason, whatever... It doesn't affect anybody else's life and it's a free country. So it's really a waste of time to worry about it, and serious waste of everybody else's time to moan about it. It's not as if somebody got a long-a55 cue stick and strapped a bunch of weights to their arm to try to improve their game.