There is no real silly, just how limited our imagination is.
I honestly thought cameras on phones were silly and I think the first gen camera phones were rubbish. Never did I know and maybe nobody knew that mobile web/web 2/social media would be as popular as it is and would probably suffer without them.
What things are you missing from old Android versions?
I had a realisation recently that I haven't had the requirement to root and customise my FP4. I don't have a terminal app and I've probably forgotten the majority of the ADB commands I used to use!
Maybe I'm just being assimilated into the Google/android eco-system.
Anything that came out when I was a kid or earlier is retro so anything pre 1990 is retro. Post is modern.