There are good decentralized exchanges and they are still standing strong, though centralized exchanges are gaining more attention than the DEX do. LocalBitcoin is a decentralized exchange, same thing with Paxful and some others I can’t remember their name.

A lot of people, especially the newbies are don’t make use of decentralized exchanges because they are not friendly to noobs, they always find it difficult to get the hang of it. And as time goes on, these people will then get used to centralized exchanges and switching to a decentralized exchange will be a difficult thing for them to do.

And if you compare centralized exchanges to DEX, the centralized ones are always better in lots of ways, including in features they have to offer in securities, storage, etc. That’s why a lot of people tend to prefer them than DEX.