People will continue to store their funds on exchanges, untill they actually suffer from this decision.
The best way to learn is to obtain one`s own experience, no matter how harsh it`ll be.
After all, do you know any people who continue storing their investment on exchanges after they got lost their money on a hacked exchange?
True, after they get hacked then they learn the lesson... But there is a problem about this point and it's that not all have wallets for the coins they get on the exchangers. I want to see you buying Ripple and send them to a cold storage, is hard right? and when we want to ride the wave on trading we don't care the complexity of the coin or the wallet it use, we only wan't to hold it until it bump and then sell it.
So, if we are going to do trading, the best thing is do it in sessions, buy, wait, sell, then cash out the btc.