No one said you should not trade, but at least you should consider risk management even if you want to trade. If it is your desire not to miss a pump or an uptrend, you can move a certain few percentage of your funds to the exchange, and trade it.

Always remember though that greed has led the funds of so many people to their early grave. Also, you should know that whatever you are leaving on an exchange, you can afford to lose them. That is all I just need to tell you.

News of hacks from a few cryptos recently should tell us that exchanges are not "hack poof" way of storing coins.
The common practice is to keep your cryptocurrencies always in your wallet, while exchanges if your direction is for trading.
But of course, no one is telling you steer clear from trading, but do it in a more secure fashion by considering risk management.

To have a stable security, you must save your tokens into your wallet. Why? exchanges are not good for storing coins in a long term because issues about coins always happening to their platform sometimes. Lost coins is the number one case that is always happening in some exchanges , that's why it is called an exchange because the true purpose of it is just for trading and wallet is for saving money. I think you know the difference of it, then you should come up an answer before asking questions like this.

It is always advisable for me to keep your coins on wallets outside the exchanges. Spread your cryptos to many wallet as you so that if something happen to one wallet, you would not lost all. The disadvantage of keeping your wallet inside exchange is when that particular exchange shut down bring along with it your precious coins.

two of the most needed things in the digital money world are exchange and wallet. they are very much needed. reliable wallet and few commissions are important.

Personally, I use exchanges only for trading, after which I transfer my tokens to my wallet, it seems that it's safer than being stored on the exchange!

I often wrote that I'm paranoid, so it's better to keep in a purse where there is no Internet access and on several media

Holding coins tokens offline is always safer than storing on an exchange as long as you take the correct measures (ie don’t backup your private keys on the cloud). Binance is probably the best safest exchange for now, but I still prefer to hold everything offline.

Exchanges are mostly used for trading because all coins are not listed on all exchanges and if your horizon is short term then you can hold your coins in any online exchange which have your coins but if your horizon of investment is for 2 to 3 years then you can hold your coins in online or offline wallet as per your wish. Trazor is best wallet to hold coins for a bigger term as it is not accessible without connecting it to a device.

according to me it is safer and a way better option to keep your coins in wallets rather than exchanges.
many people have lost a lot when  exchanges suddenly closed or had withdrawal blocked,and there are way more chances of hacking.
while wallets are safer and till date no one has faced such problems from any legit wallet.