Many people think that Bitcoin is like a bubble, so its price goes up rapidly to its peak and will plummet.
I do not think so. Bitcoin was born in 2008 but until 2013 new Bitcoins prices have increased to a few dollars per BTC and up to 2.3 years recently new BTC prices increased several hundred dollars a BTC. This route is too long to see the BTC as a "bubble" with its advantages.
Bitcoins are currencies as well as euros or dollars. They are only valid when dealing, buying goods through technology. If people do not accept do not want to use for trading, it does not have any value. What do you think if one day people do not want to use euro or dollar but want to use Bitcoin to buy goods? Bitcoin will rise in price, but will the euro or dollar fall?
I don't think bitcoin is a bubble, if it is then it would have popped already. The volatility of the market makes it incredibly unpredictable, but todays prices show the bubble is still yet to burst and would never burst. Bitcoin price now is slowly regaining back its value. We just made a big comparison of 2017 highest peak value of bitcoin that is why we slowly doubting that is it is a bubble. There is an awful lot of doom and gloom shrouding the market, but not all hope is lost. There is still a big chance for a surprising recovery.
Well I don't know about you, but I'd certainly call a drop from 19k to 6k a pop. A bubble popping doesn't necessarily mean that it is gone, poof, zero. A bubble can pop and then regain value after some time. The tech bubble of 2001 popped and lost an immense amount of value, but look, the NASDAQ is still alive and well. It may not have the same valuations as it did back then, but it's still being traded.
Bitcoin will behave in the same way unless something new and amazing happens. It'll move in slow but steady movements, not in giant leaps like last year.