[skellum]

I couldn't leave a belt on for 12 years.
Cheaper to change it than rebuild or replace an engine.
No, I've never had one fail but know 2 folk who have had failed belts. One Mondeo, one Astra, both were a huge pain to put right.
Low mileage means the belt isn't regularly moving and sharing the load- there will be long periods when the belt is static, with different parts under different amounts of curvature and stress.
Impressed you do a regular annual inspection, though.
Cheers!