I was in similar situation. Got the car, had been done I think 5/6 years ago but was only like 20-30,000 miles ago. Just had it done at the same time as a service as I've had my cambelt go before doing 60mph in my first car. Even though it was only a 8V 1.2 Clio the damage probably cost way more than the cambelt change to repair (and probably wasn't far off the value of the car lol). Mechanic showed me one of the valves and pictures of the imprint it left on one of the piston heads, safe to say I wouldn't want that happening to my GTI.
I guess if you have owned the car a long time and know how it has been driven since the last change I wouldn't worry so much but as it was years of use by previous owners without a documented change before I got the car I just wanted it done to have the peace of mind.