Should I believe it and do what I didn't do 21 months ago?
The answer is no! think, 21 months ago a child with $500 could buy 1 btc, myself living in a poor country did not cost me anything to go to my bank and buy $500 in bitcoin, I did this many times and for months. but dude... today the reality is another, few people have the financial conditions to go to the bank and deposit $15000 just to buy bitcoin, that is to say that you should not expect that this current price will increase more than 700%.