The tech isn't anything groundbreaking, as per se. It's basic cryptography, and a mechanism that makes it possible to verify the work a machine has done without trusting anyone. The groundbreaking is the economic part. This is why I cringe myself when I read the term "Blockchain Technology" being shilled for the thousandth time.
But what percentage of the world's population will actually care about the tech underneath it all, when all they want is convenience.
People (or at least, people who don't govern) don't like censorship. Bitcoin is completely resistant to censorship. That sounds attractive. Some people also want privacy in their transactions, just like traditional cash privacy. Another point for bitcoin.
Yep there is always a tradeoff between convenience and privacy.
I can't see a direct relation between these. Cash transactions are convenient enough to me.
As for not trusting fiat because of inflation and government motives - that's fair. But what percentage of the population actually has that fear? In my experience quite little when I come to really think of it.
Does the number of people matter? Would you argue in favor of UPI because most of the people would not care?
What about the volatility thing though? How would early adopters deal with that and fluctuating prices?
This is indeed an existent problem. Maybe as time goes by, and more money enter the system it becomes less fluctuating. Or maybe at some point, fiat currency becomes more fluctuating than that.