In my view only very few users have encountered such issues of losing bitcoin while its kept in the bitcoin exchange. I often have most of mine in yobit but never had any issues. At times website goes down but they have never taken bitcoin during the days of increased and decreased price.

The Mt.Gox debacle affected a lot of users and I think almost everyone who was using Bitcoin at that time had deposited something there. It's not like the most trusted and popular Bitcoin exchanges nowadays are not susceptible to hacking incidents because anything could happen ranging from inside jobs to legitimate security breaches. And also if your current exchange hasn't had any problems till now that doesn't mean it won't have in the future so only hold amounts that you can afford to lose.

It's not good nor safe to trust an exchange with your money. How big the exchange is.
That's why i sent them them to my wallet. This is not just for bitcoin but also for altcoins.

This is finally one of the first time someone says that he never need to keep all your coins on an exchange or keep all your coins just safe.
Because coins need to roll before the price of the coin will rise so make sure you spent some.

haha I agree but well there are people who just don't care, but actually whe should remind new comer for this.  One of the introduction about bitcoin is security, newbie thought exchanges is part of that secruity LOL.  Funny but it is true, so no harm in reminding them I think.  But for those hard headed who keep their  coin in exchange won't blame anyone if they lost all their coins 

There's a bunch of scam accusations against YoBit which is one of the leading exchanges at the moment. Some people didn't receive the deposit money, some people can't withdraw money, not to mention, the support is not even responding to problems like this. Some even believe that YoBit is very likely to pull out a cryptsy scam. I think most alt coins have their own downloadable offline wallet so you might wanna use that instead of storing your coins all in an exchange website.

Only keep what you can afford to lose is the answer.  Do your trade and withdraw bit by bit.  If you are a pro trader thats a real tricky answer. Make sure you are good enough to make tons of losable coins i guess.

Don't Put Your All Coins On Exchange Because there is a Risk of Losing Funds. So put Your all Funds in local Wallets because you have Total Control of your Funds.....

Good advice friends, because I also feel when storing large amounts of funds in the exchanger quite risky. If the site is down for maintenance then we have to wait for the repair process is completed. Moreover, if the exchanger is transformed into the scam sites
then you will lose your money. It is better to use a personal wallet, because we can access the private key from the wallet.