why do I dare to buy it, because now I still hold bitcoin and will hold it until the time comes when the time comes I will sell it and when I'm already lucky there's nothing wrong when bitcoin falls to a low price and I just buy it as if I donate to plant it again 
about investors not all have the same thought indeed they know about it and I also believe that not so many people who want to buy it when the price falls dramatically later 
so I just simulated it all is not certain, and many of everyone is waiting the magic of bitcoin someday? so we can see later when bitcoin falls drastically whether there are those who want to buy or not and I just think that falling bitcoin doesn't go smoothly but it can just walk like gold 
I think will respect on your choice. In investment, anything that might be happen, we must be prepared for it. If bitcoin go to $5 and there are some people still want to buy it, it is their choice. Profit or lose, who already bought it in any price must be ready to accept it. about investors not all have the same thought indeed they know about it and I also believe that not so many people who want to buy it when the price falls dramatically later so I just simulated it all is not certain, and many of everyone is waiting the magic of bitcoin someday? so we can see later when bitcoin falls drastically whether there are those who want to buy or not and I just think that falling bitcoin doesn't go smoothly but it can just walk like gold but if bitcoin drops to $5 drastically it's really in bad condition. of course, I do not prohibit any choice, it all depends on each. here I am only talking realistically. because of course whatever happens in the future, we will never know.