Yes.. they can do what they like, but some of those things might not be very smart, especially if you might want to get to fuck you status.... but hey whatever, each person can do what they like, and you have made your point... but it does not mean that they even know what the fuck they are doing, and if we are focusing in this thread upon what we might believe is a "good bitcoin investor" then selling all of your BTC does not seem to make a good bitcoin investor, but hey do what you like.. if you want to sell all of your bitcoin, then hopefully you do not end up selling too many too soon and then becoming bitter... especially since bitcoin is actually a vehicle to one of the greatest (if not the greatest) peaceful wealth transfers, in history, and if you want to fuck around with trading and trying to buy back cheaper, that is upon you to take those kinds of chances.. You are free to do so, and king daddy gives no shits if you end up having to buy back 50% higher because you ended up having the wrong mindset and you ended up selling too many too soon because you thought that you were smarter than everyone else.. like a smart virus.