Yes, I guess that is true. However, the demand your offspring place on your time and life decrease dramaticaly after this age. it really is a very different stage of parenthood. that's why so many moms have a really hard time when the nest goes empty.
My mom has had a huge identity crisis in the past few years, as I the youngest of four have come of age. for 25 years since the birth of my older brothers, she has defined her existance around us. her identity was "home-school mom" everything revolved around us, but suddenly, we no longer need her to any great extent.
This may have been an unhealthy way for her to have lived for so long, but it illustrates why I picked 18 years. certainly being a parent does not end, but it becomes much less intense around this time. The role of the parent becomes that of a friend and trusted advisor, rather than that of an athority figure.
[addsig]