Right and PoS always goes up in price, right? Notice that the average yearly price goes up substantially every year.
Price in dollars is irrelevant. In PoS like Nxt you don't pay 10% tithing. This is why PoS is better than PoW from economical point of view (this is why this subdiscussion was started if you remember).
I don't recall. You changed your arguments too many times to keep track. Your tithing as you call it is called fair distribution. It allows a small amount of wealth to be seeded and encourage economic expansion. It was all published in Satoshi's 2008 white paper. Without some ongoing distribution, you isolate your ecology so outside entities can be excluded from participating.