What are everyones's thoughts on a decentralized exchange or DEX?

I am here a lot of complaints from the largest about the largest exchanges like bittrex and polinex. I would like to see one of the decentralized exchanges like bitsquare, nxt, or maybe PAX from the komodo team take off so that assets can be traded or exchanged for fiat without any governing body being involved.

Basic info on DEXs