Yes, I agree that the clutches life is not over yet, but it is better to prepare, you can guarantee that when it starts to slip, it will be at an inconvenient time.
The bulb is a bad comparison, a bulb gives little or no warning of its failure, brake pads are a better comparison, I'm sure you don't leave these until they are metal to metal to get the best life out of them. They should be changed at or near to the recommended wear limit, the advantage here is that you can see them, you cannot see the clutch. Preventative Maintenance!
The Passat has unnecessary long pedal travel, a point that has been pointed out in many press reports.
I don't wish to sound like an arse, but I used work on a certain fleet of high speed trains, their headlamp bulbs were changed at a set mileage periodicy, to avoid the bulb failing in use.