Now I don’t want to pretend as if there weren’t any cases where WordPress is the only real option – there definitely are. If, for example, you want to run a website with a searchable database for real estate offerings. It’s also a great choice if you need a complex member area. You can find some tips on WordPress solutions in our Beginner’s Guide to WordPress.
I agree with you that Pulse CMS offers an interesting way to go, without databases. Before moving all my sites to WP over the past two years, I had always felt reluctant to use databases: but testing WP had convinced me to go ahead. Although I do not use it at this point (I played a little bit with previous versions), I bought a Pulse CMS license, if only in order to support that interesting project. I do not rule out using it for a site some day, at least experimentally.