I use Postgres for pretty much everything once I get beyond "text in a database with a foreign key to a couple of things".

Why?

Because in 1999 when I started using PHP3 to write websites, I couldn't get MySQL to work properly and Postgres was harder but had better documentation.

It's ridiculous spinning up something as "industrial strength" as Postgres for a daft wee blog, just as ridiculous as using a 500bhp Scania V8 for your lawnmower.

Now if you'll excuse me, I have to go and spend ten seconds cutting my lawn.