but if bitcoin is going to become more mainstream then sellers are going to need to start quoting their prices for their products in btc, not fiat. if we're always going to think of bitcoin as just representing us dollars for example then what's the point of bitcoin?
Theay can start their prices in btc, but it will always be a question of legalization. And I think "more mainstream" is not enough, they could do that right now, there are a lot of ways to do it.
why do we need to check what something is worth ? why can't bitcoin tell us what something is worth?
The understanding of this with a hardcut i don't think will happen, that would be impossible. The process will take many years and then you will develop a new sense for prices of a new currency.
one world one currency, what's wrong with that?
Nothing from mine. How do you think the dictators in those countries would respond?
what if i just stay in my own country and don't care. wouldn't it make things easier if every country just adopted bitcoin as their native currency?
It would be so much easier if people could decide more freely what they want. There are a lot of rules that make it more difficult. More we plan, more things go wrong.