I am scared that it will still be necessary in twenty years. It's like getting married all over again.
I know many people with 15, 20 or 30+ years of sobriety who love to go to a few meetings a week. It seems that not only does it keep them sober, but they take great pleasure in helping the newcomers find a solution. I guess for them, it's their way of giving back (12th Step).
They also enjoy coming to meetings after so many years because they see many friends there.