LibreSQL, where are you? :(
Postgres is an extremely high quality piece of software.
They were proposing an alternative when I want a fork of what I already use.
I cut a bunch of apps (and their large databases) over from MySQL to Postgres several years ago. It was tedious, but I've never had cause to regret it in any way.
When MySQL became Oracle I was very relieved to not have to think about the implications.
I don't build large apps, although for many-read-few-write-type sites SQLite isn't so bad.
And also the docs are much more readable to me than for MySQL.