Retirement planning is one of the missed points of a career person. Many people just work and work, with little planning about their future. It should be accepted that our bodies are slowly deteriorating with time, that we will not be as strong decades later as we used to be now, that our physical activities will be very limited and we will require some medications to extend our lives.
We can have a better future if we just plan and stick to it. We don't want to depend on someone else for our daily living. We should have money to spend for our own, and if we have lots of money when we grow old, our children will really take care of us (absolutely!).