1. Adoption of Bitcoin continues to grow. There are more and more companies that want to accept Bitcoin and work with it.
2. You don't lose money unless you sell.
3. Institutional investors start to invest heavily in cryptocurrencies. (Goldman Sachs-backed mobile Bank Circle acquired Poloniex. Mastercard, New York Life Insurance Company, and CIBC have invested in the Digital Currency Group.
4. It’s still only a small percentage of wise investors pouring money into it (perhaps 10 to 30% of the U.S. population).
5. US legislators are drifting toward a positive stance on the regulation of cryptocurrencies.
6. Selling Bitcoin in it's low is what whales want from you to earn money for them.
7. Currently, there are too many dumpers like Mt Gox and too many FUD news but crypto market always recovers after some dump.
8. US or China aren't interested in banning cryptocurrencies because if they do this, other countries will adopt it and win. Most likely, those governments also want to buy Bitcoin but for lower price.
9. Crypto market gains upright scale graph starting from the third quarter few last years.
10. Bitcoin millionaires became millionaires because they holded it for years, not months.
What are your reasons to hold Bitcoin?