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 long term investment where you can profit for a long period of time. Base on yearly observations of bitcoin buyers, they have seen that bitcoin continues to grow it's price yearly and has a potential to reach 20K$ within the year. We don't have to remove our needs just for us to be able o invest in bitcoin. Money being invested in bitcoin should only be excess money.