If you read news like this
https://www.ccn.com/mysterious-asian-whale-begins-funneling-funds-back-to-huobi/ that there is someone who has mysteriously bought a large amount of bitcoin. Then sell. All I can read is that Bitcoin has a fan of "Giant" who likes to invest and sell Bitcoin. This means Bitcoin will continue to run. What to worry about? What I do not want is if there is no Bitcoin buying and selling activity. Because that means Bitcoin no longer has any interest. That's what I should be afraid of.
This is just My Opinion Personally. Please fix it if it's wrong.
Well no need to worry as of this moment, bitcoin is on the process of improving and making its name in the market and therefore more and more people would love to start using bitcoin. And if your worries might happen, then there is mo bitcoin at all, so we the users will not let that happens and continue to use bitcoin, soon enough not only the investors will be using bitcoin but all of human because this will be the currency that evryone needs.