That's because "factory" normally doesn't service 15-20 year old cars (with a handful of exceptions like the ones Dan works on). Especially when they weren't even sold from "factory" in the country.
You will find that a lot of places change oil or spark plugs (or at least clean the plugs) every 5000kms though. And yes, your oil may be good for 8000/10000kms... but is your filter good for that long too? I'd at least be flushing/dropping the oil, replacing the filter and putting the oil back in (which is probably what your mechanic is planning by making you come in 2000kms early). It's not just about how many kms are on the speedo either. If your car idles a lot, and you baby/granny it and never get into high revs territory then you're going to get a lot of carbon build up that needs to be taken care of.
You should also regularly check the spray pattern on your AFMs to make sure that they're not restricting you
But as Matt said. To each their own. If you're not into regular maintenance and just want periodic maintenance then fine. I'd rather spend a couple of extra bucks and give my car the best though. You could save heaps of money by doing all the minor services yourself too... just fyi.