Well centralized exchange is more friendly because there exist the customer support whereas most of DEX runs autonomously and usually the support comes from the community itself, but when people get used to the mechanism there's basically no different to centralized exchange in term of conveniences.
Thats the point, centralized exchange has customer support.
Whereas, decentralized exchange has not it.So, the trader will comfortable when he face the problem on the exchange, customer support will help them.
With the whole customer support services centralized exchange provides, is it all of them that do respond to all issues, I have seen many people complain how these people treat them and ignore their messages when they send any, there are some people that has had issues unresolved for months, which few exchanges that are reputable are the ones giving attention to their customers, so why should one really be crazy over this, the only issue most people do have is either their money get hung over the air, or they get hacked which I think you may not have any of these issues in a DEX exchange, CEX might be popular now, but DEX is really the best.