I was born in 1989 and the math is HARD some days.
You’ll get people ridiculing you for not remembering your own age but believe you me, you’re not alone in the struggle. My husband and I started dating in 2000 so that’s awfully convenient.
Today year - 2000 + 11 is that hard?
They do have to calculate it, it’s just the calculation is a bit easier for them.
Can confirm, am born in 2000.
I understand that people are scared of “new” math, but for a 1989 birthday just take the last too digits of the current year, add ten, then add one if you’ve already had a birthday this year, e.g. 23+10+1=34. Almost the same math I used to count change when I worked retail.