What generations did you end up skipping out on?

I dropped out around Gen 3 because I thought it was too kiddie to still be playing Pokemon in high school. When Gen 4 rolled around and I was in my Senior year, I saw a ton of people in the library with their DS playing it so I picked the series back up again.

I also skipped the series around Gen 7 due to not owning a 3DS and none of the emulators working well for those games.