... they are just convinient and user friendly because it was designed to look how forex and brokers are, if at all decentralized exchange is similar to how centralized can exchanges are,
You mentioned all the better characteristics of any exchanges exist, and that's why many people use centralized exchanges than the decentralized one.
a lot of people will go to decentralized exchange because you have a lot of privacy in decentralized than you will do in centralized exchanges..
Please provide any better stat of decentralized exchanges compared to known centralized exchange in number of users and in trading volume because there is none.
Many people didn't even know what are DEX because they are little than those CEX.
I'm not a DEX hater, i'm using DEX too, besides that i promote them too. I just spit facts, no sugar coating, and based on experienced, and observance of others' issue. It's true, that DEX are better for any privacy reasons but with mid to advance (technical) knowledge needed to understand it, newbies and average traders/users surely drop using them because of technicalities they don't know.
If you have ever been a victim of centralized exchanges like not been able to withdraw, you will hate centralized exchanges. You will be verified and yet wouldn't be allow to withdraw, you will even contact their customer support only to be told that it will take some weeks before they get back to you, it can never happen on decentralized exchange because your keys belong to you.
Those are the worst experience anyone can, in any exchange. And i never experience any of those in my 7 years in this space. As i only use 1-2 CEX that are trusted, i may say, not those new and low volume exchange.
Just like i said, it's just personal preference, most people will use those easier the better options.