I know bitcoin when it price 300$. But i don't buy Bitcoin cause i can't believe it. Today btc price highly increase but why? Can you tell what reason?
You did not by bitcoin at $300 or any lower or higher price but you are still around in this forum. It is an evidence for how you love bitcoin and want to have it.
With your 3 years here (or more if you knew about bitcoin before a day you joined the forum), I think you should know why bitcoin has a high price and is loved by speculators. You did know about halvings that can be one of major reasons for each growth of bitcoin every four years.