Ah, I didn’t know the history of it 😂 how weird.You have to be an American to understand the age brackets.
These are standard age brackets in America that were originally developed by the television industry to determine TV show ratings. Everyone else who came up with polling or surveys just borrowed those age brackets and it just became accepted to divide things out that way.
65+ is used as the top bracket because when the Social Security Act of 1935 was passed, 65 was retirement age.
Yes the 65+ does make sense. The rest? Meh. Might make sense if you’re trying to gauge interest for a videogame aimed at 20yo, but not to understand the complexity of thought of the governed.