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.
Currently, paper money in my country is less used than before by virtual currency technology. You can go to the supermarket without buying any paper currency because you will be paid for the items by bank transfer, I think that the paper money will no longer be used in the future
In the future, the use of mathematical algorithms will become more common and paper money will be less used because it is no longer appropriate. Paper money will only be used for retail sales with low value items not through transactions with banks. Although cash has existed for a long time, it has gradually revealed its weaknesses and algorithms have done so well.