So, why do we need to use Bitcoin???
simple answer , for my income for get more profit
Thats one of the reason why we use bitcoin, it has many opportunity to earn or make your money grow by investing in it and its your choice if you want to go full time. also by using btc, you can easily send money to someone with low fee unlike remittances.
I think that's the reason many people use bitcoin, they want to invest and make profits in bitcoin. so they put their money in bitcoin, I also hope there will be more people who will be using bitcoin for currency