yes, because we can take full control of the coins and tokens in our wallet and we can prevent from the hacker. but it is not a mistake if we want to keep the coins or the tokens in the exchange so we can directly sell when the price can jump to the higher price. as long as we can follow with the instructions from the exchange then we can save our account in the exchanges and we don't have to worry about the hacker.

I am someone who personally like storing my coins on the exchange because I think it makes it easy to trde it when ever there is an increase in market price on my coins but the current attacks on exchanges has frightened me to save in my personal wallet.

It depends on the purpose of holding your penny, keep on the floor, exchange and profit will be faster, keeping the wallet cooler will be safer.

For a long-term investor who does not want to make trades, it is more advisable to keep the crypto in their own wallets.
If the investor wants to trade in the short term, keeping the crypt in an exchange is a good option to immediately take advantage of price fluctuations

If you do not know how to trade and only want to hold a personal wallet is the way to go for sure! I myself got me a ledger that I am using for my long term holds.

You can keep an amount of money on your exchange that will not sink into your eyes. But if you keep it in the long boat, it makes more sense to keep it in your wallet

use ledger nano too for now, i think it is more safe if we only want to hold the coins and not trade, especially now there are many exchanger site that get hacked and i don't want to lose my asset because of that

In my opinion an exchange that you have control over your private key is most preferable, coinbene and bitfinex was recently hacked last month and this month respectively, never put what you cannot afford to loose on an exchange

Depends on what you are going to do with your coins. If you are an investor and keep coins for a long time, I would choose a purse.
If you are trading, then it makes no sense to store coins on your wallet. On this I advise 2 options.