Gloves are somewhat like guns, in that it is not the equipment that causes the problem: It is the quality of the person using the equipment. Personally, I think the "no gloves" approach required in some dive environments is idiotic at best as it prevents responsible divers from getting the best thermal and stinger protection possible, yet does nothing for those that will touch anything and everything while not wearing gloves. I have lost count of the number of DMs and Instructors that I have seen picking up and prodding wildlife to show their dive group, and have had more than a few become so insistent that I touch the critter that I had to give them the middle digit salute before they stopped pestering me and the wildlife.
I also get annoyed with myself for not bringing my gloves on a "no gloves" dive when the DM wants everybody to hang on to the anchor line, whether it is needed or not. The last dive I was on, the DM wanted all the divers to hold on to the anchor rope during the safety stop despite the fact the nylon rope was badly frayed, full of poking bristles and other nasty stuff, and when there was no current, or reason to hold the anchor line. Several of us were hovering nicely at the safety stop, and the rest of the divers were all bunched up like a cluster of grapes on the line (a different kind of cluster came to mind). If I had been wearing gloves, I would have obliged him, but since I was in a "no glove" environment, I just shook my head no because I had better things to do with my time than pick bristles out of my hands.