I wear gloves in hot weather and cold weather. When it's fairly mild out, I get uncomfortable wearing them when I'm grooming. When it's hot, I sweat like a pig and that makes grooming very dirty and gross for me. Gloves keep my hands cleaner and me happier and more comfortable. When it's cold, my low blood pressure and lower than average normal body temp keep me VERY cold. Gloves help me stay slightly more comfortable. Of course, at a certain point, no glove will keep my fingers from going numb.
The wind of heaven is that which blows between a horse's ears. ~Arabian Proverb