@GracieGirl,
I think the idea is to do the opposite -- to help you appreciate the here and now. There are a lot of good things about being older, too, but it's easy to romanticize it and then skid right by the good things about being 13.
I loved going off to college at 18 and being independent. My parents did contribute to my college education but it was limited (less than required to claim me as a dependent on taxes, for example, even though my dad did anyway). I was very, VERY financially strapped, and that was with financial aid and scholarships. Later I worked, too, while going to school.
But I lived very (VERY) cheaply and managed it. (Like, $225/ month for room and board cheaply .... which included roaches and annoying housemates, and lots of tofu and ramen.) There are things I miss about that time and things I'm very happy to be past.