Wuf is a capitalist. If he can see that it's better for business if the city is well oiled, then maybe he can see why it's of benefit to people who still don't even use the metro, or even go into the city at all.

I don't know how much the city of Seattle impacts on the economy of the state of Washington in general, so it's hard to say if it's fair for a state-wide tax to pay for it. But I've never heard of any other town or city in Washington state, so it's easy for me to assume the overall state economy revolves around Seattle. What's of economic benefit to Seattle is also of benefit to Spokane.