Especially seeing how exchanges are getting hacked (whereas block chain based exchanges can't be hacked on a same massive scale, safe through individual's account who do not practice the usual precaution), or the Chinese government actively banning activity on centralized exchanges that can be easily shut down, no need to worry if the exchange might run away with your funds (i.e. these exchanges also acts as blockchain based wallets for your altcoins).
The last few years have shown us how flawed the security of exchanges housing millions of dollars of funds in cryptocurrencies has been, and hackers have always been a step ahead at exploiting these vulnerabilities. Governments have also resorted to banning centralized exchanges making it even harder to rely on one particular exchange to trade securely.
Maybe 2018 will be the year for these Decentralized Exchange projects to prosper too?
Very like so, I have seen many decentralized exchanges already on the rise but then again the main problem such projects face is that there are a few scam/bogus names coming up along with them and it will get to hard to distinguish between them until they establish their names well enough in the community.