Joh I am sorry that come out harsh. It was not intended.
Apology accepted.
Joh I had only in mind that it is not a good example.
You proved it was an excellent example, by protesting that it was quite different from a chastity belt. That was my whole point about the rule being too generic: it also covers things that you might have quite different views on.
Joh If you over protect your children they will not learn to survive in their life.
Yes, I am not at all for overprotecting. That is why I wrote in my original example "Nor am I saying everyone should start using leashes on their kids, but I think there are cases where they are the lesser evil." - you only choose it if the alternatives are worse, like cham-ed described.
Joh Whereas the leash job is to prevent the free movement.
Yes, so it is the job of the parents to estimate when restrictions are still needed to protect the child, because the consequences might be too dire, and when the child is responsible enough. (often the harder choice for concerned parents.) There are lots of restrictions used for small children that limit free movement, like playpens, gates at the top of stairs, fences around the fireplace, etc.
I just don't like the the idea that people totally rule them out and are so judgmental about the parents using them, just because they resemble safety measures for a dog.