Always where them now. One thing is disease. Another nice thing is you can peel them off and not so hard to wash up. Wife can get ugly with a nice smear of coon grease on the door handle.
I buy the nitrile gloves mostly because their lighter than latex and hold up better and if you wear latex to much you could develop an allergic reaction to it. Thats why you see so much stuff listed as latex free these days. I'm an EMT and our group gets the gloves from medical supply companies so they are cheaper than if you would buy them from other places.