is there any logical reason for someone to use Bitfnex after they fucked their clients? NOPE but still many are using them
Some people have some serious Stockholm Syndrome around Bitfinex. Others are just desperate gamblers who want a piece of the BFX market and access to margin. I don't think these people realize that Bitfinex's problems are not over...
Pretty much. It could be argued that, in the short term at least, Bitfinex will be more conscious about their security and faster to hunt down any other vulnerabilities they might have. But it's only a matter of time before complacency sets in again and some motivated attacker gets the better of their defences. Definitely more a question of 'when' than 'if'.
