Or they just need money fast in real life so they cash their coins no matter the value of it is, whether it is for basic needs or emergency - it depends on the decision of the user and its their loss.
Yes it is really depends upon the situation of the investors why they are going to dump their bitcoin. I think it is wisely enough if we make a decisions that makes us gain profits even not really big but atleast we gained. Avoid dumping for just your emotion uncontrolled.
I dumped, or I'd prefer the word "sold", all my BTC in 2015 because of personal reasons, needed cash fast and had no other options. Left a really small stash which I had to liquidate also couple of months later. But I still read the forums, news and did background research on the matter. Rebought in Nov last year (got in just before the big hype, lucky me) and now I won't be going anywhere, I'll hodl my coins even if I have to eat grass!
So don't think of it as dumping, more like selling For many it takes years to wrap the whole crypto idea into their brains, but once they realise the true nature of cryptos, they'll be back and for good.