When I retired in 2002 I had retired to stay home with my family and didn't necessarily think my playing days were over.
I'm not sure why writing for others became harder. Probably a reluctance to give away anything you might conceivably use yourself caused a block. I did it, but it remained hard when it had once been easy.
The two words 'information' and 'communication' are often used interchangeably, but they signify quite different things. Information is giving out; communication is getting through.