Where does the idea that pensioners are so affluent come from?
Old age pensions have never really been adequate. In their basic form, they are designed to be enough for an individual or couple to live on, for a short time to the end of their lives.
For example, the original 'Old Age Pension', introduced in 1908, was for people over 70. It was five shillings (25p), and it was means tested. I think the average (mean) life expectancy then was under 60, so people were lucky to reach pension age
From 1948 until 2010, women could retire at 60 and men at 65. In 1948, the average life expectancy was just under 70, so, again, people weren't expected to live very long as pensioners.
Currently, I will be eligible for my state pension at the age of 67, and life expectancy for a female is 82, so, according to statistics, I may have 15 years as a pensioner.
Yet, like many people with no private or professional pension, I will have to either live on a pension that gives little more than a subsistence, or I will have to remain in the workforce, even though my physical health and mental faculties are declining.
I will remain in the workforce even though there are younger and fitter people looking for work. I will remain in the workforce mopping up those part time, low paid positions that employers will keep offering as long as there are people, without too many commitments, who will take them.
I don't know what the answer is to the question of whether state pension age should continue to be raised, but I do know that even if people do live longer than they used to, it does not mean they can or should work longer.