This is really serious. These cases also keeps me thinking how safety it is to keep funds on exchanges since even those one never expected to get hacked always get hacked. It's really wise one keeps his or her funds on several exchanges and not just one and it's more best one also safe via fiat to avoid getting hot totally. This keeps me scared the more but how good it is that some exchanges so recover by paying back investors while some doesn't.

And we would like to see adoption, but we don´t have infrastructe for it, exchanges are being hacked on they are scamming their users so easily, just like BCNEX for example. We need to build strong and safe infrastructure that would attract more people into this dangerous sector. 

many places of exchange have experienced cases like this, they only see a momentary profit so that places of exchange like BCNEX scam traders who have assets there, whereas if they can be a place of exchange that has a long time then they will have a good reputation and can get many advantages of traders.

Right, that is the risk. Make sure we choose an exchange that is truly responsible and guarantees consumer protection. Some of the top global exchanges that have been hacked are committed to compensating for the case. The lesson for all of us is not to carelessly store assets in the wallet exchange, especially if there is any doubt.

Everyear there is millions of dollars was lose because of the hacker and it is possible that market will crush because what if the hacker sell the coins they get.

Every exchange sites need to be aware on how their system will become safe to the hackers because many traders also losing theie funds because of this . The team of exchange is responsible for that becuase if they system is not strong to keep safe their traders Im sure people will leave not trade there.

Even famous platforms get hack, it is never advisable to store your money online even if it is a well-known platform, hackers will surely find ways to infiltrate platforms. Imagine million dollars have been stolen from different platforms since crypto had started and the majority is from small platforms which is an easy target for hackers.

if you really want to hold the assets that you have then choose an exchange that already has a big name like binance because even though hackers managed to steal but your assets will be replaced by the exchange

Well I store crypto on a hot wallet linked to a debit card - Blackcatcard. What’s a euro card only with a hot crypto wallet linked to it. As I’m super concerned about safety of my money, I was looking for smth I can sure about.  This card is of European financial institution so it seems quite trustworthy to me. I know that it is widely said not to trust hot wallets, because they can be hacked easily. But here it is linked to a bank debit card with a lot of degrees of protection.
As for conditions they offer good exchange rates, all transactions via a mobile app. I don't use this card to often to withdraw money or make transfers, online to pay online, for this reason can't say anything about the fees but it has a nice bonus program If your monthly balance more than 300 euros and card turnover at least 200 euros, the interest on the balance is 2, 2 percent  + 0,1 percent cashback on purchases.

Update

Kucoin exchange have been hacked, and worth $150 million have been stolen.
News: https://www.kucoin.com/news/en-kucoin-security-incident-update

Once again, I would advise that you guys do not keep your assets in the exchange wallet, it is not safe in any way.