For the sake of the arguments the answer is Yes I will still buy bitcoin if it drops to 500$, but the question is what is the reason for that to happen? Since this is just a question even though we know that it is impossible to happen.
I am pretty sure that many people will still buy at that price, of course we are in the world of the trading industry, when the price drops from a very expensive price,
as traders you will buy because this is the cycle and concept of the trading industry, that is just its simple logic.