Trade fiat (un-backed) cryptos instead? Since all you do is keep your coins on exchanges and try to trade them to make money, why does it matter wether they actually exist, or if you can withdraw them or not? Spend your life kissing your wife or hugging your kids instead. If you get worked up about money, or funny-money like crypto currencies, you are just losing... Exchanges are bound to screw you over, just as your wallets on your computer are bound to get hacked and stolen from, just like your bank is bound to put you in debt. Only when you have lost everything can you win.

I lost some at cryptsy last year. Who cares. We are all equally involved (although I got really mad at that time^^)

What these exchanges do wrong is they let people get away too easily with keeping their shit on their servers. They should tax our asses for out-sourcing responsibility over our assets to them.