I've been reading people against BTC and one argument of "What Bitcoin will fall" is the subject of people who is saving their BTC expecting the price increase and then sell all.
What is going to happen when almost all the users have their BTC out of circulation and saved expecting to sell when the price increase?
Seriously, I don't think people going to stop using cryptocurrencies as a tool but I didn't answer anything becuase I didn't know what (exactly) to say. Can you help me with this?
When there is less supply of bitcoin for sale prices would generally go up. The problem this this theory is that if no one is actually spending their bitcoin then merchants would have less incentives to accept bitcoin which would give potential buyers less of a reason to start using (and buying) bitcoin. So this could actually result in lower prices. What is going to happen when almost all the users have their BTC out of circulation and saved expecting to sell when the price increase?
Seriously, I don't think people going to stop using cryptocurrencies as a tool but I didn't answer anything becuase I didn't know what (exactly) to say. Can you help me with this?
use economy section instead ... 
