I've had technical knowledge of the internet for many years and I've heard of Bitcoin in the early days, but for some time I did not have that curiosity that was characteristic of an early adopter nerd. This was a high cost of opportunity as Bitcoin's growth is impressive, especially in 2017.
I honestly did not give focus to crypto early 2016. The next year 2017, bitcoin is starting booming and its price is continuously going up so I now become interesred until I already earn some money and become addicted to it. But since then I do not invest in bitcoin. I am just working for it. I am afraid of the unstable market.