if that's the case and there's no good local exchange then self custody is the way.
we got stablecoin anyway that can guarantee asset stability, and most of the dex already have such big trading volume, uniswap is enough for trading in my opinion, some dex also provides perpetual.
you got the benefit of your private key your coin, basically CEX isn't primary need anymore , can always settle things on chain,
With the popularity of cryptos right now, there must still be some left and there might still be lots of people who prefer CEX over DEX for some reasons and this is why CEX still leads the way even up until now. The issue has nothing to do with the stablecoins or on a volatile crypto but indeed that stablecoins still had some advantages over the other.
it's just most of people already getting used to CEX far before DEX become this good and they never try to self custody.
Yeah. Before CEX came in and dominate the scene, we firstly have a DEX. If you are an OG in crypto, you already experience to use DEX first. There might still be some who sticks with it because they are mainly following the true advocacy of crypto/Bitcoin which is to provide anonymity or freedom to the public.