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.