What is laziness or ignorance?D&D has not fully escape humanocentrism.
It's not Gygaxian humanocentrism though. Humans don't dominate because of Human potential dominated the demihumans in decline.
It's straight up laziness or ignorance.
Running a dragonborn, elf, dwarf, or orc is easier. Not better. Just lower mental load.
Which is fine. Unless forced. Which is my issue.
Because not only is the setting not given, the variant rules to convert monsters aren't.
I had to go back and create a Damage/HP per CR chart.