This article addresses the recreational use of guns: if you need the key so you can go hunting, just wait the 5 minutes required to thaw the ice.
A home invader is unlikely to be so accommodating.
A home invader is unlikely to be so accommodating.
Taking away the self agency, and you might as well probabilistically condemn them to die in another way. (Though that's just my two cents from my experiences surrounding suicidality and/or other suicidal individuals).