Why is Male Human/Female Elf pairing so popular?

Have you noticed the gnome/goblin pair in Mechagon? I remember when I did that quest for the goblins, a male goblin takes off with his gnome girlfriend at the end.

That goblin quest and now, the gnome in Mechagon who’s married to a goblin, Idk if they’re the same couple but it’s telling where the game may be going.

I think the factions may be blending a bit.