The short answer is because life is too serious.
As for the longer answer, when I started writing, we were at war. I was heavily engaged in developing and deploying command and control and tactical intelligence systems. And I was constantly confronted with information that I could have happily lived my entire life not knowing. It was wearing me down. So I resolved to find something to do that was not the least bit serious, perhaps even ridiculous.
Enter Riff the Razzle.
The adventures of our hapless hero Jack helped keep me sane. I hope it lightens your day as well.