The lesson learned is that you should only have that much coins stored on an exchange you need for trades and IMMEDIATLY withdraw them as soon as you finished your trades. Exchanges may shut down from one day to another, happened to a lot of exchanges in the crypto space already.
Some people are just unteachable. A few weeks ago i saw a poll in one of the telegram chat: " where do you store your coins?". And what do you think? Almost half of those who have voted keep their assets on exchanges.
i still do the same thing,because what?
i do it for quick trading if i see some big changes on market graph,
and of course i think twice or even more what exchange i choose for it.
and i never do that in exchange such a cryptopia,nova exchange,livecoin,coinexchange,
i am not saying that all exchange is same,but on this cases, they are have more more unfamiliar coins.
and i just think maybe not safe to saving our asset there.