Recently I was sent a link to an article about a dog activity park in England, a park costing £15 000.
The writer takes a dismissive view of the spending of such an amount of money on dogs and interviewed only people with a negative reaction. I think the park is a good idea, as it will encourage people to get out in the fresh air with their dogs. The writer shows his ignorance of agility by not realising that the human has to do the course with the dog, rather than stand still chatting to other dog owners, as many of us do if there is nothing of interest in a fenced dog park.
And to me the main reason for supporting the building of such parks is that we owe it to the dogs who live with us. They didn't choose to live in a crowded human-designed environment and they deserve as much intellectual and physical stimulation as we can provide.
Parks like this are an effective use of a small space.