Correct me if I am wrong, but isn't Bitfinex one of the safest exchanges/lenders? You have to wait for a manual withdrawal which is done once daily. Also, on the USD side, I am pretty sure its more virtual than you would think. So the only downside I can think of is if they run with your money, a hack is unlikely.
As far as I know you are correct... However, as you state, the only downside is you have to trust them not to run off with your money.. I seem to remember this guy on the forums that went by the name "pirate" also was trusted by a lot of people not to run off with their money....
Would I trust them with $1k.. yeah.. I do..
Would I trust them with my life savings.. not bloody likely..
Would I trust the largest bank in Cyprus with my life savings..
Would I trust the largest bank in the US with my life savings...
Anyways, you get the picture..
Sigg