Because the market forces investors to be quick otherwise they are losing money. This is current trend right now, that if an investor misses the opportunity to sell or to buy any asset, they are forced to wait for unknown time to get out or in any coin.
No, these so-called investors are someone who wanted to get rich in a single day because they heard Bitcoin could make you rich. A real investor does not really care about its short term price because they know the project will run for years, not for days. Nobody forcing you to invest your money, because you can understand the project perfectly by reading and researching, even if the market declines. 10 years is not long enough for investors, because everything needs to be done from scratch.