Exchanges are needed to retain value and so we can bind the worth of a Bitcoin to something we know. The thing is I am considering moving all my coins from exchanges to my wallet. Although, with respect to the recent events I'm not sure if that is any more safer. Maybe only due to the "decentralizedness" of keeping my coins with me and not thousands of coins in one place.
It's just sad to watch exchanges go down every now and then.
Seems to me it is easier to rob 1.6 million $ of BTC than 1.6 million $ of fiat. And get away with it.
Exchanges shouldn't be used as traditional banks.