yeah really amazing .. when i was first know about bitcoin it was just 12$ then for few month it goes to 20$ .. then i forget it everyone says it a failed currency ... now in starting of 2017 i watch it goes to upto 700$ and now its 13000$ lol if i bought some bitcoin in past i would rich today....
Ya that is bitter truth and believe me I know it I had made 3000$ in 1 month due to bitcoin and for that, I am very happy because I can't even think about double in one month but I got 6 time I have invested..