I still use an iPad Air 2 (from 2014) and every year I look at the new iPad coming out, think about upgrading, and just don't see a point. It's stuck on iOS 15

I still use an iPad Air 2 (from 2014) and every year I look at the new iPad coming out, think about upgrading, and just don't see a point. It's stuck on iOS 15 so I might finally be forced to upgrade to a device because of that eventually, but otherwise it does a perfectly adequate job of everything I want out of an iPad nearly 9 years later.