If btc is legally accepted in all countries then huge number of investors will increase. and the use of btc in various fields will increase.
what is your opinion about this?
It is highly imposible that all countries will adopt bitcoin as legal tender.
because every country already has a legal tender in the form of currency that is used as a means of payment.
If bitcoin is used as a legal tender, it can kill the country's local currency.
But I don’t think OP meant Bitcoin being accepted as the default currency for all the countries. I think what he’s saying is that if all the countries can accept it as a legal means of making payment. So, people transacting in Bitcoin without any issue. But then, even if it’s that simple, I don’t think all the countries will eventually accept Bitcoin. There will always be stubborn countries who will just want to decline so they look different. But for a fact, I believe that as the day goes by, many countries will legalize and accept Bitcoin.