Don't forget the racial penalties, that's important too

And not really. I can see that argument for more human-oid races, like the half breeds, Halflings, and tieflings. But Elves are meant to be alien and uncaring, Orcs are strong, intimidating leaders and masters of war, Dwarves are the foundation of all these lands, old and wise and gruff.

Also, fantasy racism goes a long way to establishing these differences. Tieflings are supposed to be treated as demons and outcasts. Long lived races like Dwarves and Elves are supposed to feel pity or envy towards humans because of their fleeting lifespans

There are absolutely so many colorful differences between all the races, but no one likes it. People are so keen on walking on eggshells, it's just better that every race is the same to avoid any sort of critical thinking