I like paper money. I like to feel the buying power in my hands :p Bitcoin makes me feel like a robot. I am not saying paper money is better tho.
I also like to feel paper money in my hands, not virtual ones. Virtual do not bring such pleasure, they can not be touched and sniffed.
That is the reason people don't have faith in bitcoin as they easily trust something that they can hold physically and that is not possible with bitcoins and paper money will always exist in future as it holds huge userbase in compare to bitcoins.