People who don't like any hot drinks. A hot drink for me is the ultimate comfort. Someone told me they don't like them because they don't want to have to wait for their drink to cool down if they let thirsty. Who drinks a hot drink due to thirst?!
People who say they don't like water. How? You need water to survive. Not liking water is like not liking oxygen. And when you're dehydrated there's nothing like water.
Personalised number plates. What a waste of money and why would you want to be recognisable when driving.