We use Postgres because it’s fantastic at the scale and problems it solve, if you have an extremely critical system where raw speed is at the core of everything and you’re dealing with petascale then maybe you’re bringing a solution you like to a problem it doesn’t fit?
Postgres is amazing. When I use Sqlite I miss many of its upsides--better data migrations and better concurrency being two. But queries are not free, and sometimes are slower than I'd like even with the right indexes. And for OLAP-like queries like the one in TFA you might say "well, just don't use postgres for that," but wouldn't it be better if you could? If you could use one database instead of two, or use your favourite database in more places instead of reaching for a different tool?
No, I used to but not anymore. I do appreciate when solving the problem is enjoyable with a tool that brings in a good experience, but I try not to get attached these days.
I get what you're saying though.
So more seriously my thinking is that we should, on purely moral grounds strive to have things be fast and lean. How many years of human misery have been lost to waiting around for python programs for example because the team for years wanted to the interpreter to be simple