I own this bike since 1979 and did more than 100,000 mls on it.
It nearly never missed a beat and always got me home. Regular servicing is easily and cheaply done and prevents bits from falling off.
The best thing are the astonished looks other bikers give when this diminutive motorcycle (no external indication of type or capacity in my case) is kicked into life and gives its healthy bark. Driving on bendy back roads is more fun than on any modern motorcycle, as an extremely relaxed seating position (big Euro tank and flat, narrow Euro bars as per standard UK specification), lots of torque low down and children's pushbike-easy handling sill allow to show a clean pair of heels to many a modern bike on the right roads.
On top of that parts are dirt cheap and easy to replace (if needed), fuel consumption is roughly 60 mpg (4 to 4.5 litres/100 kms).
This is incredible fun!