> is that you can use different databases. But no-one uses different databases.

The main selling point to me was that you could write a lot of wicked fast integration tests on top of H2 and exercise your ORM. But that was already at a point where "the testing pyramid" was a diagram that some of your coworkers had seen and were trying to figure out how to explain to everybody else.

So my desire to write fast backend integration tests never lined up with my job responsibilities + opinions on relative test counts.