In the U.S. it is. The last car I bought there the guy said 'yeah, it's fine, gets good mileage, I want something newer'.

After I had it a few years a couple friends said 'why don't you buy a new car? You can afford it'.

But that's the same for a lot of things. If something works I keep it, I don't care about having a 'new' one because it's new. Many people do though.