I believe there's a lot of people still holding BTC for more than 3 years. Seeing the trend of Bitcoin today they are very positive that next coming years can be more fruitful. This is bacause of the continuous spreading news of bitcoin as well as the continuous support of the community and different company all around the world in cryptocurrency and bitcoin being on the top give them more courage to hold them. But lets not forget the fact that anytime bitcoin and other cryptocurrencies can fluctuate its value.