Well, that's true if you want CASH from your bank - but when you are moving "electronic" money from one account/bank to another you don't need more than 2/3 business days, many times with 1 day is enough, and its very unlikely your money will never go through. With Gox you may have to wait for almost a month with your withdrawal on "processing", and the fear the money will never come out because of hack, shut down by law enforcement, scam, whatever, is high.
What we need is an electronic based currency that's easy to move around and doesn't rely on overly regulated and bureaucratic infrastructure.
Oh wait...