Do you use a card protector?

[cardsharkk04]

I was just wondering how many people use these and WHY? Do people use them because they are worried the dealer is actually going to reach over to their cards and muck them? I have never seen anything like that before in my casino experience. Or do you use them because they have some sort of meaning to you, or do you think they look cool? Also are they some sort of recent fad or have people always used card protectors. I think they are pointless and kind of annoying. What's your opinion?