this seems to be such an universal question in this world don't you think so? yeah as you've stated that bitcoin used to have a giant rise in late 2017, so i likely to think it will happen anytime soon, not on same time pattern as in 2017, but anytime do you get it.
wait, there's no solid proof that bitcoin/crypto will be international's currency yet though. back to your concern, yup i know there're plenty countries that officially banned it, no more of anything related to crypto, not really but i think they're scared, as you can see the banks all over the worlds are against it as much as they can, since they think if they can't control it, it's such a huge risk
why not? it's likely 50-50 percent chance. it can happen imo, but maybe no. i know my answer sounds general and easy but when are we be able to predict everything but put a hope there?
In my opinion, not "all", but a limited number of people who in fact, know and understand its benefits, which is hard these days since there are many news and different perspective on the main usage of bitcoin in specific and cryptos in general. way back about bitcoin, in the past it was not so practical to make payment with bitcoin, nowadays, it's gradually changing, which is positive as many enterprises and stores and suppliers have already set bitcoin and other cryptos as payment for better convenience, however, the transaction is often slow which is concerning many many many people out there, though it's promised to offer few flatform to boost the speed of transaction, it's likely a luck, a risk, or a chance even to make the payment fast. i've seen many of these, so why should people use bitcoin? their choices, i don't, since i'd love to get to know about bitcoin as a new tech and what it could bring and offer of a grand better technology human beings can possibly create.