Why selling everything i dont think that would be very great for the people who having bitcoins because why selling all of them if it dont need to spent all of it. Never sell everything just invest everything.
of course that wouldnt be a really good thing to do right now in my opinion, i would definitely not do that in order not to sell bitcoins
I do not think that you should sell everything at once because you should still save some Bitcoin for the future when the price is going to rise.
If you sell everything and the price is rising again you have no Bitcoin to sell at that point.
Yes, selling all the bitcoin at one price will get us out of bitcoin opportunities on a single day itself. To have better benefits throughout out rest of our life, we must be holding some bitcoin all the time.
If you are a trader you may sell all your bitcoin at once and you may buy again when you find better prices to buy. Still, you will be having risks to miss better up surge movement or you may not get better prices to buy again.