The retirement age should be an option.
When I was 64, I decided to take early retirement because I just simply could not stomach on the daily basis to reoprt to a complete jerk, who was always, for years, referred to by any unfortunate person as the REEMER, because he got the biggest kick of reeming his subordinates in the rear, every day. I loved my job. Unfortunately, I reported - functionally to people in our company's head office in the United States, who appreciated my efforts, while, administratively I had the misfortune to report in Canada to the afore-mentioned jerk.
The year after I retired, Ontario raised the mandatory retirement age. I am 71, now, but I would still be happily working if it had not been for one single disagreeable person.
Having said that, I realize that my work experience, i.e. being fond of the job is not everyone's cup of tea. But if one considers that the age 65 was introduced as retirement age by German Chancellor Bismark in the 19th century, when the life expectency was 64.
So, with all the advances in medicine, nutrition, life-style, etc. it is not unreasonable to expect people to be useful to society until the age of, let's say, 75 years.
The ruckus in Europe (undoubtedly supported by North American Union freeloaders) is a tempest in a teapot.