I think it's yes because a years ago bitcoin prize is low and it's to easy to buy 1 bitcoin compare to the prize of bitcoin now . You were lucky when you buy bitcoin when it's not popular and the prize is low because when you invest it until now is your profit will be much high.  But it still OK when you buy bitcoin now as long as you keep your bitcoin and keep investing it you can still can have much profit you'll get. Because we all know that bitcoin value are still increasing and can be the new money crypto currency in the world.