It's not too late to know now.
If you know Bitcoin for eight years, would you buy it? Will it invest?
I have known Bitcoin for a long time. At that time, I didn't understand Bitcoin, and there were some negative news that made me afraid of Bitcoin.
After learning about Bitcoin, I discovered a new world. I regret why I didn't understand at the time.
Now I will often introduce Bitcoin to my friends. I don't want more people to miss Bitcoin.