But 2-3% of my assets. I wouldn't get too hung up on the details. I didn't earn 40k every year. Some years were less. And some were more (see FAQ). I didn't live in New York.
Everybody can run their own spreasheets for their personal income and tax situation presuming an expense level of 6k/year. Figure an investment return of 3%+inflation (so 6% or so total). See what you get.