OldShooter
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Worth it? I have no idea. First, we don't know the cost either initially or ongoing. Second, given limited resources, spending that money would necessarily mean that some other good thing would not be done.I hear what you're saying, but sometimes it is "worth" the money to mitigate the "impression" or "feelings" of risk. It would be worth it to harden our schools so millions of parents would "feel" better about the safety of their kids - even though the risk is actually very small.
We simply can't deny people's feelings in all of this. But, YMMV.
If you can tell me the tradeoff vs not doing the mitigation I can probably tell you whether I think it is "worth it." If you don't have that information, I don't see how you can make the judgment you're making.