It's not that you are expected to work that long. It is a case of not being expected to work longer than that. You are always welcome to retire earlier if you have the financial means to do so. You are also welcome to work longer than that should you have the desire to do so.
Of course, those last two sentences are tongue in cheek.
The real problem is that certain segments of society are not compensated for their labor at a rate that would allow them to retire early, and may even have to work beyond retirement age in order to supplement their stipend. Worse yet, these people often work in sectors that offer few affordances for them to maintain their health into old age and may even push them into living conditions that are detrimental to their health (assuming their job isn't detrimental to their health in the first place).
Ideally, people would be able to retire when they want (within reason). The reality is that some people can retire at a relatively young age while others don't really have that option.
Of course, those last two sentences are tongue in cheek.
The real problem is that certain segments of society are not compensated for their labor at a rate that would allow them to retire early, and may even have to work beyond retirement age in order to supplement their stipend. Worse yet, these people often work in sectors that offer few affordances for them to maintain their health into old age and may even push them into living conditions that are detrimental to their health (assuming their job isn't detrimental to their health in the first place).
Ideally, people would be able to retire when they want (within reason). The reality is that some people can retire at a relatively young age while others don't really have that option.