I think there is no exchange sites are completely safe because they might have an evil purpose. bitfinex might have been planning this from the beginning. they are looking for and nurture the trust after they have trust and they get a lot of users. of course there will be plenty in the wallet main bitcoin. then they will steal it. be careful with third party dude

You are correct, bitfinex suffered a hack case, lol, you are the prophet to know the future. How about bittrex and poloniex?

i doubt that this is going to happen but in my opinion you should surely never hold your bitcoins on an exchange because you might lose it for sure

even there is some people used an exchange as their online wallet lol ,
we should never trust any wallet that involved with third party ,
as bitcoin wallet is private , you should not tell and held your private key to anyone ,
by storing bitcoin in third party like an exchange and other online wallet which you did not hold the private key , you are just giving away your bitcoin.

Some have made a good point. How I am supposed to hold coins that don't even have wallets yet and im holding long term like maid or agoras? Is Omniwallet safe?

Private key has always become a general things before you're wanna for saving your money in a place, and maybe I know if you are trader and anytime you don't have a time for moving your funds into your wallet but for the normal people is not a traders and keep their money in exchange site. stupid ever.

Surely you will never want to keep all your coins in one place. If someone gets access to you wallet, unfortunately you may have funds taken from you. The wise thing to do is to keep it in different locations, taking all necessary security measures.

Don't put all tour coins in these exchanges still you'll never know when they will declare they were hacked.
Trusted members don't even trust blockchain wallet when it has been up since the start.

I know about that, before thinking continuously about someone can get access into my wallet, just think about moving my funds into my offline wallet is really make me confused because it's too long. but keep or not my funds if wallet i think that is not problem if i have my private keys.

Now Gox is a verb.  They are all saying to keep it in a core. But there are a lot of small bitcoin users who dont know that and still using bitcoin wallet exchange sites. Those are the people that should be reached out to tell them "use this it is better and safer".
Those exchanges will be having a problem on scamming people with just a little in their pockets.