We don't really need BTC. I hate when I see people trying to convince others to sell everything they have to buy BTC, it's disgusting. Bitcoin is a lottery, you shouldn't use the money you need to pay your bills and buy food to bet in the lottery right? Bitcoin is kinda the same thing. People should invest money that in case they lost it wouldn't be a big deal you know? It's a long-term investment, however, it's a bet. You can win a lot or you can lose a lot too. Are you brave enough to deal with this risk?
Bitcoin is a form of currency that we could used in transactions, investments and in trading. It is not a thing that we need but it is a thing we could used for us to earn and could give as a chance to gain profit. For me bitcoin is open side opportunity that could bring a better form of transaction for people that could serve as reason for us to need bitcoin.