People who grow up using these sorts of bespoke software are gonna have some pretty weird nostalgia. "Hey when you were a toddler did you ever play with a paint app where the fill tool created flashing swirly patterns? ...no?"
On the subject of nostalgic paint apps, I distinctly remember one of the Kid Pix drawing tools/games that I had growing up... what a weird piece of software that was!
I spent my whole childhood trying to find someone who played Defender of the Crown and never found one :(
I have a friend who's dad is a good carpenter, put a whole second story on his house, did the flooring and made a lot of furniture. He said it was about 4th grade before he found out that there were stores where people went and bought furniture instead of just making their own.