Well, the bike as such is still fine. New drive train and a proper alignment of everything, and it's good for another ten years with minimal servicing. I should also replace the brake pads and cables, but that's easily done by myself.
I did the same (new drive train and a professional service) with my other bike last year, and that cost me €200 (€110 for parts and €90 for having them installed and a routine service done). A new bike is much more expensive.
Edit: Well - at this point the necessary parts are not readily available anyway. But neither are new bikes.
While a new bike has some appeal - mainly disc brakes as the major technological advancement - I really don't feel the need for the hassle that comes with searching for a suitable replacement for my tried and trusted bike. And while I can go shopping for parts on the Internet, shopping for a new bike requires in-person shopping and test rides.
Also, I don't like wrenching.
I can hold my own fixing/adjusting brakes and shifters, and of course dealing with tyres, but anything that involves the drivetrain components I leave to professionals.
But come to think of it:
@Eye-Q, any advice on products (available in Germany) to
properly clean and lubricate the chain, derailleurs and stuff? Looking at the components in detail (to count the teeth...) has made me realize how utterly fucked up dirty they are.