https://cointelegraph.com/news/could-bitcoins-bubble-lead-to-long-crypto-winter
Eerie similarities to 2013
A year after the block reward halving, with media buzzing about Bitcoin, and a multifold increase in price - this is not just a description of 2017 but also perfectly fits 2013. After the block reward halving in 2012, the price of Bitcoin shot up during the following year. The price increased from around $13 at the starting of 2013 to a peak of over $1200.
The reasons for this jump are manifold (including the bots - Willie and Markus, which bought Bitcoins on Mt. Gox), but the almost 100 fold increase in price was unprecedented. The 500% increase in price of Bitcoin in 2017 appears tame in comparison. Of course, the base effect does make such 100 fold increases in price almost impossible now, with Bitcoin's market capitalization crossing $100 Bn.
Past performance not always guaranteed future results. The results may vary depending on the current trend and support from investors and community. In other words, the trend in the past is different from what it is today.
Yes there is always chances for a crash as always but we have lots of reasons to believe that large crash has lower chances to happened. The support for bitcoin today is truly awesome and this is not an output that based on fabrication and manipulation.