Yeah, it's funny how long-lived chips are in the embedded world. I think a lot of it comes down to inertia and familiarity. "If it ain't broke...". I see that

Yeah, it's funny how long-lived chips are in the embedded world. I think a lot of it comes down to inertia and familiarity. "If it ain't broke...". I see that with keyboards, for example, that like you said often still use atmega 328s. That said, if you just look at features versus price (specially if you're not buying at volume) there's a lot of nice things you can get for basically no extra cost (or even negative cost) in newer versus older chips.