If you do not own the private keys, you do not own your cryptocurrency.
Excellent point!!! Many newbies don't understand this important point! I learned this by my own mistake. I bought bunch of bitcoins in 2010 on a exchange and left it there. in 2017 was trying to get it back with huge problems. Only when I involved several lawyers and wasted ton of money and sleep over it, I was able to get my bitcoins back. Cold storage is the key!
Hey, at least you were able to get your funds back! Many people can't say the same. Hopefully in the end it was at least worth it.
Personally I've lost a pretty decent size stack of Nano from the recent bitgrail fiasco. It's looking like I may never get those funds back, or it may be several years of waiting. I'm sure we're going to have many more horror stories of exchanges going rogue - there's several of them that already do seem very shady. It's really only a matter of time until something like this happens again.