You should not forget that in addition to centralized exchanges, there are also decentralized ones, using which you will receive your coins to your wallet immediately after making a transaction. Since there is nothing more reliable than storing coins on your wallet, therefore, using DAX is preferable for medium-term trading.
What I don't like about decentralized exchanges is that they don't have the tools of centralized exchanges, for example I like the tools that bitfinex has because bitfinex has to place at the same time:
1.-Stop Loss,
2.-Take profit
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Now the development of decentralized exchanges is proceeding at a rapid pace, as the team understands what CEX still has advantages over DEX and is working on it. After all, until recently there were no such tools as Take profit and margin trading on DEX, today we take this for granted.