Mine made me get one yesterday. He said it is to protect him.........since he already has bronchitis AGAIN! His reasoning is that I'm out and about with work, and around people that I will have a bigger chance of dragging something home and he will catch it. I suppose he's right, and I would have gotten one anyway, but he didn't need to be so pushy about it. I said this was one I wasn't going to win no matter how hard I dug in my heels so I just let it go and let the nice man stick my arm. And he didn't even give me a toy or piece of candy afterwards.