~snip
Some people hold their crypto assets on exchanges, it is very dangerous, previously many exchanges have been hacked.
I advise You should keep your crypto assets in your personal wallet because the exchange is not safe.
Throughout the small history in this market we have seen many hacks and when the shit show in MT Gox happened it was clear that storing your coins in exchanges is not the best idea as every year you hear about an exchange hack and till now over a billions dollars worth of coins are lost to hackers and then if you tally the amount of coins lost to scammers the amount will be staggering.
It's far better to pay for the transaction fees every time you deal with your trading activities than to risk your assets by placing it inside the exchange.
By seeing that statistics everything is possible and in order to take care of your investment it's really best to always have a personal wallet where you
can keep your assets with your own securities. Whatever happens it's you who are in charge to your assets securities.