I think you are coming at this (or at least writing about this) from a place of sadness and regret, when helping your family become more independent doesn't need to mean you won't be needed in their lives. You're their loved one and outside of becoming estranged, you can't change them needing you in their lives, so enjoy them and guide them through ways of helping them spread their wings to fly with you still in it for as long as you're around.