How can anyone know what they'll want to be in the future?
When I was 8, I wanted to be a submarine designer.
When I was 12, I wanted to be a science fiction author.
When I was 16, I wanted a girlfriend (a goal that was hampered by the fact that I was already a sophomore at Stanford at the time, and that my taste ran to sexy 21-year-old seniors, making my objectives both unlikely and illegal).
When I was 21, I wanted to be a millionaire.
When I was 25, I wanted to take my company IPO.
Now that I'm 32, I want my kids to be happy, and to be able to take a nap when I'm tired.
Plans change. We change.
Originally posted as a comment on Ben's blog.