Using your table, why not just show 21-35 as "Young", whats this 6 year "still young" rubbish.
Then this relatively young sunset of younger years twaddle. Thats Middle Age period.
Love how middle age runs to 55, then 24 hours after your 55th birthday BANG! Officially Old.
What rubbish
Off to yell at some kids on my lawn now
Don’t break a hip there, fella!
I put the “still” and “relatively” qualifiers in there because while 21 and 37 are both, in my opinion, young ages, they are not young in the same way.
Old/Young really comes down to feelings and so is all relative anyway. When you’re 18, 30 seems ancient. When you’re 60, 40 seems young. Etc