The problem with arriving at an age where your song count is respectably high, is that you have said a lot of what is in you and you start repeating yourself. aka copying yourself. Add to that you have more life experience and that brings with it a more balanced opinion.

Tom Lehrer admitted as much re the balanced opinions with age. The quip about satire being dead when Henry Kissinger got the Nobel Peace Prize in an oblique way supported that argument.

As I always point out, a lot of creativity comes when big changes come in your life. Like divorce. It leaves a hold in your mind and you fill it with other things. Creative people use creativity.