Different strokes for different folks. Some people are content to spend
their whole working career doing the same basic thing over and over,
day after day. Others get bored with that kind of career and seek out
new challenges and interests.. including hobbies in their retirement years.
Many years ago I had to attend a retirement party or transfer party for
a guy who worked at a major engineering company. We were seated with an
older couple (I was only 30 at the time) and he told me he had joined
the company 30 years ago as a purchasing agent. I asked him what he
did now. He said, "I am a senior purchasing agent."