I didn’t have a manual job, but I had a lot of responsibilities, both financial and for very large numbers of employees. Huge accountability and pressure that comes with that and I know that it would have become a lot harder had I worked into my 60’s, along with the obvious risk of a heart attack etc.
Fully understand Glos Guy the pressures of your role first hand from the pressures my brother went through in a similar role to yours. My reference to desk job was more akin to a customer service advisor.