I know bitcoin in 2014 when the price is not more than $ 100, at that time I just thought that bitcoin equal to paypal or payza so that does not make me interested to have bitcoin, then I leave and never follow bitcoin development until last year because the price has reached more than $ 1000.
Unfortunately I didn't heard yet about bitcoin 2year back. Maybe I'm busy on playing rpg games and focusing on my studies at that time. I guess many of users that already know and earn bitcoin have already a millionaire today. I don't regret if I know about bitcoin at that time maybe I just ignored it because I'm not serious about earning money at that time. But right now, if I will missed it then that will I regret it someday.