I noticed that the main factor of Bitcoin's price spike was the growing demand for Bitcoin. That way, Bitcoin is becoming more popular and I see that it can be used as a reference of various digital currencies that exist today. When a coin is getting sought after by many people and then supply decreases then price will keep increasing. But when demand is decreasing and supply is still a lot, it is certain that the coin will decrease its value. So we can say this as a thing that is very influenced by us all, the user of digital currency.