It depends how long you intend to live. If you live as long as humans did while evolving, you should stop learning when it is natural to. However, if you plan t

It depends how long you intend to live. If you live as long as humans did while evolving, you should stop learning when it is natural to. However, if you plan to live past your 40's, it would be a worthwhile investment to keep learning longer. In addition, we live in a more rapidly changing world than our evolutionary ancestors did, which makes necessary to continue learning throughout our adult lives. e.g. I'll probably have to learn new JavaScript frameworks until the day I retire