Security is one of Bitcoin main problems and before that is solved we can not go mainstream for sure. Exchanges should be regulated and responsible or idk what but this now is just redicoulous.
Security the main problem of Bitcoin? LOL
You clearly don't know what Bitcoin really is, and how it works.
The only one that we can blame are the shitty exchanges and their amateur/noob operators.
Exactly what I just said with different words xD