I can only speak for myself and not for them; their reasons may differ from mine, therefore everyone is free to form their own opinions about bitcoin investment. The reason, or rather, the barrier that prevented me from joining earlier, was that I detested anything to do with possessing or gaining access to its information online, especially when it involved money. I've been duped before due to my lack of knowledge about online investments and ventures.

I am afraid of such things, therefore I avoid them even though I could have invested earlier and reaped the rewards by now. Nonetheless, I suppose I am not too far into the adventure after gaining a thorough knowledge of bitcoin and how it operates and its potentiality in the coming future.