Interesting question OP.
Before bitcoin I invested heavily in various PTC, RevShare, MLM and Forex programs and mostly lost money everywhere.
I have heard the words, "This is new and revolutionary and will bring huge profits to everyone" so many times that I have almost stopped believing in such announcements, I have simply heard it too many times.
However, a friend persuaded me to join this forum and after some time I gained confidence and faith in bitcoin and decided to invest my money. It was the best decision of my life.
Today there are so many scams on the internet that it is very difficult to distinguish between good and bad projects and that was my biggest fear, that I made the wrong choice again