In cold waters, like here in the UK, yes, I agree, 3mm or 5mm neoprene gloves are an important part of my exposure protection, but why do some of you guys see them as an important part of your kit in warm waters?
It isn't exposure protection, because your hands aren't going to get cold (unless you have some medical condition, etc, there are always going to be exceptions to the rule), and if you have good buoyancy control, you aren't going to be touching the bottom, so you don't need to protect your hands from stings, cuts, etc.
And why would you need gloves on to climb the ladder on a dive boat? If you screw up and put your fingers where they are going to get trapped, neoprene gloves or any other type of glove, for that matter, aren't going to prevent your fingers getting damaged.
In my experience, the vast majority of the people I see wearing gloves in warm water are touching stuff, be it coral or marine life. I agree that boat briefings should stress don't touch anything, but if people didn't have gloves and went and touched the fire coral/stonefish/cone shell anyway, they wouldn't want to do it again...
Mark