I am quite amazed to hear this question, as to why you think it is not worth it. I mean a lot of users almost every single member of this forum might be using CEXs even if they are saying they are not. I mean, people who prefer to use DEXs and somehow have to use CEXs. Might come up with an alternative solution like maybe preferring CEXs with no KYC or a lesser level of KYC solutions.
A lot of us for sure are using CEXs, while we should be supporting more with DEXs. The liquidity of the two are different and far behind each other.
There are more traders and volume with the CEXs and they have got more incentives compared to the DEXs.
I get the idea that you are more concerned about the fee not about the privacy, I don't think fee are that high on these centralized exchanges. I still uses a lot of the CEXs and all of them have different withdrawals rates, speaking of BTC especially, I think OKX is much better.
The fees on CEXs aren't that much and even I, still uses a CEX into this day but not as active as the others. I only trade when I have to or when I have seen some opportunity to buy/sell.