After getting scammed in the past, people have become more careful with their investment and will never prefer to invest in something blindly as they are aware that they may loose their money in it.
Ya i also agree with you.I believe many of us has been scammed especially at pyramid pronzy,double btc,cloud mining and even worse alt coin dumping scheme.Because of that,we really to be careful on choosing the program that we wan to invest.In first place,think first how many risk we willing to take before we investing.
I don't see any trusted program at a moment to invest my bitcoins, and if I have to invest then I will prefer to sell my bitcoins and that money I will invest in real life products.