I've experienced this as well, and it's almost always because the tooling for MySQL is "better." I don't necessarily agree, but Sequel Ace (formerly Sequel Pro) is hard to beat.
The DB support in Jetbrains IDEA is awesome, they also have it as a stand alone IDE called Data Grip, could be woth a shot? https://www.jetbrains.com/datagrip/
Inertia is what I've noticed as well. The few people I've convinced to actually try out postgres have ended up liking it more than mysql.