We cannot blame 100% the investors, because nowadays all of this ICO/MN-POS project are rampant with a promise of good profit, we cannot deny the fact that some of the people specially the new one were hyped by these type of promises, hyped by good whitepaper, good website design, and also some of this projects are using some prominent personality to convince the investors, now my advice is, everyone should do their assignment to double check, make a well and depth research about every projects.
It's true, only few investors are investing in crypto for the sole-purpose of using it based on how cryptocurrency was created. Maybe it's because most people who invite new people into crypto introduce it as an investment tool to earn money. That's why most people think of crypto as an investment. As time goes by, let's hope that cryptocurrency awareness will increase. We need to understand the whole concept of cryptocurrency.