Would the nationwide introduction of Sarah's Law necessarily lead to revenge?

[Rantagonist]

In the pilot scheme there were 60 children who were protected from potential abuse by it.

Surely if just one child is spared then it makes it all worthwhile?

And should all ex-husbands checking out their ex-wifes new boyfriend be viewed as doing it out of revenge?

Maybe its just because people are considering this from a pesonal perpective (I know I am) and the majority on MN are straight and female.

Obviously anybody can abuse. Absolutely true.