For 98% of conditions I agree .. you shouldn't fire thru a closed door.
But, living alone and having someone attempt to open a clocked & locked bedroom door in oh-dark-thirty is reason for alarm. Most bedroom doors offer about as much protection as cardboard because they're hollow-core doors.
Mine isn't. If wood starts splintering, either the solid door itself or the moulding/door frame, someone is capable of ripping moulding attached by 3-1/2" screws. At this point, I already have a felonious intruder breaking down my last reinforced
It's unlikely to happen in reality though. My attack cat would make mincemeat out of 'em.