Anything that is being used as a medium of exchange is money. Bitcoin, like gold, is money.
Bingo!
Yes bitcoin is money, just wait for the near future the bitcoin is became centralized currency. and its easy to us to used bitcoin just like money.
Bitcoin is not going to become centralized anytime soon, the devs have played their cards very well and they have avoided several traps laid by the miners and their interests to centralize bitcoin, and I have no doubt they are going to keep doing the same thing for the foreseeable future.
Bitcoin is popular because it's decentralized, if it's going to be centralized then it's not bitcoin anymore.
The blockchain is a game changer and we like to see more and more coins who are using the blockchain so bitcoin will become more and more popular.