Karried, are you saying that cities shouldn't pay to pave streets in low population density areas because few people drive there? That we shouldn't have children's playground equipment in parks because some people don't have kids? That we shouldn't have publicly funded arts projects because some people may be blind/deaf/otherwise won't enjoy it?

Where exactly do you draw the line?

Many of the dog parks in the area, incidentally, are funded largely by non-profits, community groups, and the like.