Decentralized exchanges are the ones needed most, we are trading decentralized coins in centralized exchanges 
but no worry we have great dex OAX developing
but no worry we have great dex OAX developingi totally agree because existing centralized exchange are very very risky for all of us. If something happens to on e of the major exchanges like polo or bittrex or binance all of us are going to suffer for so long time because btc will be dumped very strong.