I conclude that having your first child, in many ways, is like becoming a vampire.
– L. A. Paul, Transformative Experience, p. 82
This quote invites jokes and Paul makes one in a footnote. (You have to get the book to find out what the punchline is. It is not that great.) But she also has a serious point. Both choices, having a child or becoming a vampire pose problems to normative decision theory. Can we ever rationally choose to become parents or rationally choose against it? The decision would lead to unforeseeable experiences, which transform our own motivations.
For more see my discussion of Paul’s book.