Not many, even though I had the opportunity to do so multiple times, I chose (and still choose) not to work those kind of times.
> I genuinely cannot understand your argument in favour of 60 hour weeks.
This phrase implies that you are comparing mandatory 40-hours to mandatory 60-hours, which is not the line of argumentation.
The line of questioning is that people should be forced to never work 60 hours. It is a proposal of restriction, with the argument that the lives of workers would be better if so. And I argue that is not true.
If I recall correctly, the longest stretch I've done of 60+ hour weeks in a metal fabrication workshop is 12.
The longest stretch of 50+ hr weeks I've done is in my current job in a metal fabrication workshop is about 5 months.
I genuinely cannot understand your argument in favour of 60 hour weeks.