I was five years old.
And you were already rocking BASIC?! When I was five, I drew some of the worst MSPaint comics you could possibly imagine. Even 4chan wouldn't be on my level.
I looked back on that when my kids were similar ages. I was more advanced than my kids were at those ages, but when I compare my kids to other families, I wonder how most of the human race actually survives. How can so many kids NOT read by that age? Some kids are reading chapters and doing math, others are learning about the existence of letters struggling to learn to count. When I learned the kindergarten's requirements that a child should know most of the letters and count to ten, public schools suddenly seemed like a home for the mentally impaired.
I've since learned outliers usually don't think of themselves as outliers.