Because of the lack of knowledge to invest in bitcoin make bitcoin not for everyone. Because before you invest, you must have the technical know how of the technology so that you will be galant in whatever comes or challenges. And that is why when people are saying that bitcoin is for everyone, I only believed that  those guys do not really understand bitcoin, and I don't want to say something on the other threads but what the op here had said made it clear that to invest in bitcoin you must have the "basic knowledge" and which is the most important part in bitcoin investment and those who has no knowledge on bitcoin can't involved themselves in this new technology. Even in the forum, those who are not good in bitcoin, writing and contributing to meaningful knowledge can't join it because they have nothing to offer. I am also on the school of thought that bitcoin is not for everyone because because bitcoin is limited to some group of people. Children, old age, and the blind are not meant to use bitcoin though someone can use it for them but it themselves. All those early users of bitcoin who sold it because of fear lack the knowledge of bitcoin and sold them off for the fear of losing.

This your thread too is also the category of those first experienced of bitcoin. And forum is the best place to learn anything concerning of bitcoin. Joining this forum helps one to prevent being scammed. And other things to learn in the forum. All what you need to do is patient and reading.