for me the price of bitcoin because Bitcoins price is determined by the laws of supply and demand. Because the supply is limited to 21 million bitcoins, as more people use Bitcoin the increased demand, combined with the fixed supply, will force the price to go up.
I personally am impressed by this incredible price increase. When I started coinage with coins I did not think I would make anything. I treated it as a fun and hobby, and now the price fluctuates at the limit of $ 11,000.