I loved this series of stories... 8-page backups in one of the Superman books, iirc. In the end, Bruce (Superman) Wayne decides to give up active patrolling of Gotham's streets to concentrate on using his super brain on cures for cancer, etc. I think he comes up with an instant head-ache cure or something...
Meanwhile, his wife, Barbara, has to put on a costume to... well, that would be telling.