I really like decentralized exchanges and I hope that they will become popular in 2020. However, many people do not use decentralized exchanges due to trading volume.
honestly, it is not just the trading volume that I consider in choosing an exchange. I am also not certain to connect my wallet directly to the dex exchange, though I have the private key, the regulation, and convenience that a centralized exchange is what I want to consider. Most of the time, the volume in DEX is determined by traders, and it might not be the reason why people don't want to trade in DEX since the volume can be achieve if the crpyto do really is performing well in the market. It is the regulation that centralized exchange provides, despite of wallet security or also known as "not your keys, not your coins".
True! A friend of mine has traded on DEX's for a few months already, and otherwise used exchanges with no KYC. He's a very "private" person, told me NOT to tell anyone of our friends that he even owns any crypto.
There's a LOT of people who straight up AVOID exchanges with KYC, because they want to remain private. Makes sense, it's the reason BTC was created in the first place. It's nobodys business what you trade and hold.
Guess what? KYC/AML is coming to every exchange, be it a CEX or a DEX.