While I don't like the idea of death, it is inevitable. If anything scares me, it is debilitating disease or injury.
so you never feared death before fathering? more likely the fear was already there : can you remember why you then feared death so that we can dig deeper into some reasons people fear death. As a disclaimer : I no longer fear death, since I have put all my things in order, so that even if it has a possible scarry side as some say ( including medical doctors who do near-death experiences), I have real hope that I'll finish on the right side. Obviously before "I cleaned up", I used to fear death.