“You’d think with all the taxes we pay that they could have put in a sidewalk.” That is the exasperated comment from my mother-in-law as she and I were driving past the local playground near their house in the Milwaukee suburbs with my kids in the back seat. She has a very good point. The previous day she walked the half-mile or so from her house to the playground (adjacent to an elementary school) with my two-year-old son Shaw in the stroller. The walk begins in their subdivision, developed in the 1990s, which has no sidewalks but relatively wide streets…