that's a big understimate, by 2030 mean that the 20 years of satoshi prediction is done, at that point bitcoin should be in the first spot

top 5 at the very least

agree with you
and most likely All currency will be valued based on bitcoin.
Bitcoin will replace dollar as the big Currency

They won't all have to fail at the same time, they would just have to fail in general, and then the government would have to find a way to control BTC.  Not going to happen in our lifetime at all.

i think bitcoin will be a money in the all world, beacuse it is popular in china now.

Yeah it has a great future for the sure, but it totally depends on the acceptance and the adoption level of the people. And yes the mindsets of the people would also play an important role in deciding the future of bitcoins that whether people see it as a threat or an opportunity, but I believe bitcoin is safe for next 15 years.

What is this shit, seriously?

Is someone paying you shitcoins to talk shit about bitcoin?

Maybe learn your english properly first before coming here on your newly made account and creating bullshit about something you clearly have no idea about.

I'm on the believers side obviously. I don't even want to say about Bitcoin that "it’s the future of money" because the word "money" is so dirty that the Bitcoin might be smudged if put them close to one another. Bitcoin is much much more than a "new money" IMO.

The end of the money as we know it, is coming. Will remain credit cards, electronic payments and Bitcoin. Whether we like it or not, this is the future!

Bitcoins are progressing now all over the world, and people are now trusting it more and more.
The reason behind it is the features and performance of bitcoins as a currency. What I see in future of bitcoins is that bitcoins will be used more in other countries and soon  we will see that even local shops will accept bitcoins as payment.
But, there's a negative side of it as well, bitcoins' use for gambling and illegal purposes may increase too in future. The thing is that future is unpredictable and you can never say what would happen exactly, but there're more chances for positive results than these negative ones.

After seeing some of the billionaire controlling the price of bitcoin using lots of their fiat currency mostly from china. Within 6-8 hour period price swing from 500 to 368$ which will be totally unacceptable by the one who like to hold bitcoin for daily uses and they will become panic and sell all of their coin again to those billionaires or whales. Due to this I doubt on its mass adaption in future.