The benefit of Steem Dollars is that business can accept them more comfortably since they have a more stable value. Can you imagine being a shop owner and trying to sell your $50 product for STEEM which a couple months ago would have been for 500 Steem compared to today being less than 50. Pricing their products and services are much easier when using a stable value, as well as knowing that what they've already been paid, won't lose value.