Would you like pre-teens?

Further partitioning via additional life stages seems both redundant and silly to me. Eventually we end up with something like....

Newborn
Infant
Baby
Crawler
Toddler
Walker
Runner
Preschooler
Schooler
Prechild
Child
Postchild
Preteen
Teen
Postteen
Young Adult
No-longer Young Adult
Preadult
Adult
Postadult
Presenior
Senior
Postsenior
Elder
Sage
Methuselah
Lich
Demilich
Eldritch God