All have their good and bad side. And I don't think people wey dey use decentralized exchanges are more here. Me personally I never use am because their charges e dey high and the prices of selling Bitcoin e dey very low compared to centralized exchanges. And I don't think decentralized exchanges are purely e dey decentralized. As I don tok am before, centralized exchange e dey better selling prices of bitcoin pass di DEX. So from my explanation you can figure out the advantages and the disadvantage of the both. I never really use dex for transaction and there was a time I wanted to use it and when I compared the two price, men I foe loss weti no good so I leave till now.