This really makes it seem like you have never used a database system at scale. There are reasons why systems like MySQL let you turn them off, and they are some of the same reasons why pretty much everyone who uses a database at scale has settled on MySQL. Also its why as is mentioned in the issue once you actually scale your database foreign keys become a nightmare. If all you have is a toy project you can feel free to use any database you want, but if you actually need to serve traffic you might want to rethink your priorities.