I used to have a WordPress-based blog. It was indeed a nightmare to keep up to date, unless a bit after version 2, where they included the option of automatic updates, and the whole thing was a bit more manageable. Not because it was too much of a problem before (download the compressed file, uncompress, move to the correct folder), but because sometimes an update came out and I didn't notice. Had malware installed o…
Another not-WordPress alternative is a software called NibbleBlog [0] which is nice because it's also written in PHP and will likely be easy for existing wordpress admins to deploy. No change in tooling. This also doesn't require a DB, it can run from flatfiles. [0] - http://www.nibbleblog.com/
How difficult would it be to get WP to run off of sqlite? I'm not familiar with the code base to know.