This time last year, bitcoin was still around $1000+ and nobody could think or imagined bitcoin is going to rise from 1000$+ to like $18000+. There was a huge market rise of it when closing July, August up till December
Yeah that's true who can expect that bitcoin will rise like that but maybe people realize that even it's risky to invest in bitcoin they know that they get a good profit. And maybe many people understand about bitcoin that why many people demand bitcoin in the market.