He also composed some of his top work as presents to people he liked.>Notenbüchlein für Anna Magdalena
That's J.S. for you.
My take on him is that he simply wanted to hear more better music from others. In my mind he Genuinely wanted to inspire people around him, so that there would be more music he himself would be inspired about.
However, he himself happened to be somewhat overhelming in his contribution, therefore we had to wait for Mozart and such people to appear.