What term retirement usually denotes to is, to stop working. People often don't like job, so to retire usually tends to be on top of the list. However, if one likes what he does, he will do something similar to pass the time even after retirement.
Now, I'll be honest, I dunno what I am driving at but I wanted to spark topic about retirement. Now, you go,
Retirement does not mean you don't like the job, you just age and everyone basically does. You couldn't work forever 'coz there are factors to consider; physical capacity to work, health capacity, and life satisfaction wherein won't you be wanting to enjoy life at least before you get to that 'point' of every living organism? Now another factor is the age you will be choosing to retire. There is an early retirement option to some people especially those who are financially stable already before meeting the retirement age. Some are retiring early due to health conditions. So I'd say it is quite of a privilege to employees.
Most people do not want to think about retiring early if they have not yet reached retirement age or their working capacity and health are still guaranteed. Maybe they are passionate and love their job or because they want to work and make money. I see many people thinking about retiring when they reach age but they continue to do personal work or open a business. There's a lot to worry about financially, depending on each country's welfare system and conditions. If someone wants to think of retiring early, it means they have other plans, a preference for more free time, or simply time to take care of their family.
Everyone's expectations from retirement are different. Some people like to work and have their daily routine, while others like to sit down and do things they want from time to time. One of the most important things to say about retirement is that the pension should enable a person to live comfortably.
It is also difficult for people who have been working for years and have a habit to make a retirement decision. As you mentioned, there are people with different expectations. While some continue their habits, others may hesitate to enter a new life that retirement will bring.
It just depends on the situation. Those who are still doing their hobby is a different context from working for ir, at their retirement age. Doing it as a hobby doesn't require you the same amount of time. Also to consider, would they still be paid if they would do the same thing upon retirement?