Same!
Every single year I think about upgrading, but there never seems to be much reason to.
My battery life is starting to get noticeably shorter though... I'm actually thinking of getting the 12th gen base model. Or at least, I was when I thought that it was coming out this week. I dont know if I should just get an M4 Air or keep waiting to see what the 12th gen offers. an a18 chip and 8GB of RAM would be quite an upgrade for us Air 4 users. An M4 and 12GB seems like insane overkill.