We are all vulnerable one or the other way. I blame it on our monkey mind. We are building our castles, switching to the next thing with the hope of being satisfied. The race to succeed, feel good, or garner appreciation from the loved ones or colleagues at work.
We are in a constant fight within. We value ourselves less than we deserve. We stop trusting ourselves and our capabilities and adversely affect ourselves, our health, and loved ones around.
A leader is also a coach of his league; he/she should ensure that none of their team members are vulnerable. That will happen with open culture, trust, and freedom. It is not easy, but for a rocketship to sail a leader has to do everything.