A web search for photos of old-time playground equipment (of the sort they have at Riverside Park in Independence, Kansas) turned up this little essay by Bill Van Dyk about a decision to tear down every playground in the Toronto school district despite the fact that the old equipment was safe:

What happened was this. An inspector from Ottawa had created a report that laid out some guidelines for new playground equipment, with the laudable goal of ensuring that they would be as safe as possible. The new guidelines were better than the old guidelines, of course. Some clever people have found ways to build playground equipment that is safer than ever before.

The Toronto School Board, having received their new guidelines, hired an inspector from a private service to check all of their playground equipment to see if they conformed with the new guidelines. They did not, of course. The old playground equipment is, well, old.

As it turns out, the old playground equipment was not very bad at all. Out of the hundreds of thousands of children who had played on them, no one had ever been killed, nor, apparently, were there many serious injuries. In fact, more children are injured on the paved areas of the playground and the yard than on the playground equipment.

Still, no cost is too high when it comes to children's safety. Except for the cost of common sense and rationality. The Toronto School Board ordered 172 sets of old playground equipment removed, on the off chance that someone, some day, might get hurt really bad.