The exchanges are all sketchy IMO.  When I buy coin I don't send off any more money than I can bear to lose.  Kind of like Vegas.  We can't trust anyone but ourselves these days.  I know what you're saying how things can't grow and develop without trusting someone but it almost has to be a situation where you have mutual collateral on the other party.  Maybe that's why married people like to cheat with other married people.