I haven't used gloves on a regular practice aqua-scapeing or doing in-tank maintenance in the past. Until one day I looked down at my hands after moving some coral around. It was as if I did not have any fingerprints anymore, smooth as silk. So, when I do a straight water change, I still don't. But when dealing with live rock, Zoa's, pally's or any other corals, I now use gloves. Just the nitriel ones, I don't care about getting wet but it beats the alternatives.
PS: I have since regrown my fingerprints.
Ernie