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 that you'll be stop working eventually. That is only a choice. But if you have your own business or investment, then you can still work on it hands on so that the rate of success will be higher.