I absolutely never allow my coins to be in anyone else's possession... no online exchanges, etc. When I buy or receive coins, it's always straight into cold storage addresses I created on an internet incapable computer and printer. When I sell, it's face-to-face for cash on the spot.
So basically we (the humanity) invented a whole new technologies, and the internet and more things after that, only to ended up selling in a face to face market?
I know you do this things for security reasons, but we need to improve. We need to do the life in the net not outside like before, for what we desing a way of payments in the net and anonnimity? To ended up in a face to face? no sense.