and why is that?
Because it's a questionable shit hole. It's hard to know who owns it, where it's located, what's true and what isn't. It craps out at vital moments and the hack was a pathetic oversight on their part if what they say is true.
In this day and age it's slightly depressing that somewhere of that nature is still one of the leading crypto exchanges.
You must be trolling or something. Bitfinex works well so far, yeah they have some troubles with Chinese regulations but it's not Bitfinex to blame and recent big theft they handled it pretty well. How nice it would be if we had Bitfinex instead of MtGox in 2014.