It just doesn't make sense economically to spend BTC today when you know tomorrow it will be worth 15+ percent more. I'm sure people HAVE used them for goods and services, but not in this current environment where we're seeing at least a dollar a day increase in value.
Sorry, nobody "knows" it will be +15% tomorrow. What everybody does know is the value can go up and down. With that uncertainty, trading bitcoins for cash/services/goods/etc. does make sense.
I don't see any shortage of threads in the Marketplace forum. So even in today's environment, it is happening all over the world.