Volatility of bitcoin has developed due to the dearth of market knowledge amongst it's investors. People investing in bitcoin for a quick cash generally tend to get swayed by market emotions and overambitious claims by the champions of the crypto currency.
The complexity of Blockchain and the esoteric manner in which the currency operates makes it a tough study, this leads to people investing mostly on the basis of little know ledge and hearsay. As a result the market experiences intermittent patterns of sharp rise and fall, this leads to volatility.
Agree with you bitcoin is volatile and it does not have fixed value because in market bitcoin price use to change because of change in market value, people are developing trust for bitcoin which is making bitcoin noticeably high now. Bitcoin is very easy to understand now as it is no more complicated and no more risky, people in market make blockchain promoted and well used currency, with every moth the ratio of investment and speculation decide the value and the price of bitcoin, so bitcoin use to increase and decrease which creates twist in bitcoin community every months.