Boy, this post brings back good and bad memories..
First the good..
I remember being 5 or 6 riding with my dad. At some point during every ride my Dad would have to make me ride in front of him, between him and the gas tank because I would get so comfortable on the bike, I would fall asleep.
Now the bad.
My daughter has been riding with me since she was 8 or 9. About five years ago she was with me and we were following the wife on her bike. My wife missed a corner and tried to mountain climb a bank on a cruiser. Pretty tense time, trying to keep my daughter calm and to stay by the bike, while went and check on my wife. Needless to say, everything turned out ok. Took a year or so, but my daughter still rides with me on either bike.
But the wife did give up riding.