why does anyone prefer to withdraw usd? I think withdraw btc is better, low fee and fast.
certainly you can do that. but eventually you have to transfer btc into usd for shopping or business, not so much people like our imagination in this world who support Bitcoins. so anyway, you can only use the dollar finally, why would you pay a extra withdrawals fee?
although not much, but there are still some a few shop accept bitcoins, I can buy goods with btc directly, so no extra fee. On the other hand, I also understand your ideas, pay and accept bitcoins need more time after all.