Bitcoins have three useful qualities in a currency, according to The Economist in January 2015: they are "hard to earn, limited in supply and easy to verify". Economists define money as a store of value, a medium of exchange and a unit of account, and agree that bitcoin has some way to go to meet all these criteria.
Nah, there is nothing that is not hard to earn, even the USD is hard to earn man. You can’t be walking on the road and be picking up free dollars, can you?
Nah, you can’t, rather you will have to get a job and work hard to make your dollars; the money doesn’t come free just like that, you will always have to do something to get it. That’s the same thing with Bitcoin, you will have to either work hard for you to be able to earn it or you will use your money (which also came through hard work) to purchase the Bitcoin. And Bitcoin doesn’t contribute to our economy, although it can better the life for people.