Thanks for sharing your experience with SQLite :-)
What are the advantages, in your own experience, of using SQLite instead of something like PostgreSQL? With PostgreSQL, you could run database migrations during business hours and use a proper ALTER TABLE.
Main reason is that SQLite is embedded with my application. There isn't a second, third or fourth "microservice" to spin up. I know Terraform/Docker, love them, but the gymnastics I need to orchestrate for my particular situation is not worth it.
So for the tradeoff of complexity for functionality, SQLite hits a very good sweet spot for me.
Yes I miss proper ALTER TABLE a lot when it would have been useful. But my experience shows me that I can design software pretty well following YAGNI and the occasional instances of when I need missing functionality is more than made up for the ease of use otherwise.