‘Vulnerability’ does not mean being defenseless against a hostile world.
‘Vulnerability’ simply means that having armours is stupid, because there is actually nothing out there, having enmity against you.
There is simply nothing out there that is disposed unfavourably against you.
‘Vulnerability’ means relaxation.
‘Vulnerability’ means that if you are getting hit, then what is getting hit deserves to get hit, and what is getting hit, is just getting highlighted as the next item that must disappear from your mind.