You're blowing this way out of context, and starting off very rude. I hopefully would never need to wear it.
Also I don't even have a gun or plan to use one. Its to protect my vital organs, at least a bit of extra percentage, if ever an emergency situation called for one.
Its also one person less for police and military enforcement to have to worry about protecting.
To say if there is someone ramped in my street shooting, maybe because of war, or maybe a deranged shooter, whatever else, and to say I can't put the armor on because it's self defense -- go fuck yourself.
It is legal for the most provinces, but most also require a PAL as well.
In my case, I'm not looking to use any gun, just to have the ability do the best practical minimum and protecting my protect my vital organs some.
Like you said, it's not 100%. Ok.
I hopefully never need to wear it. It's more in case if ever an emergency situation. And one less person for police and military enforcement to worry about.
Hopefully never comes to any war