Seems weird that international sepa proceeds instantly
Fiat rocks
Maybe we don't need Bitcoin after all.

Nonsense. Long before Bitcoin was a thing, I dreamed of money with wildly fluctuating buying power.
I imagined a world where it took an hour to buy a cup of coffee, an hour to gas up your car, an hour to buy a bag of groceries... Because math.
Zero confirmations duh.
Volatility is a problem because btc is in its infancy. With increasing adoption the swings will be smaller and smaller