Levistus's_Leviathan
5e Freelancer
I've always seen elves and gnomes as a sort of opposites in their mood/opinion of the world.Gnomes are basically elves that are actually interested in the world around them.
(Seriously, when you think of a normal day in the life of an elf, what do you imagine them doing beyond staring moodily into the middle distance? Or humming gently while staring wistfully into the middle distance?)
Elves don't like the world, as they were all exiled there as a punishment. They see themselves as superior to other races because they literally originate from their Heaven, and basically stuck in Purgatory until Papa Corellon decides to forgive them. Basically, they're entitled because they were spoiled and see the world as trash.
Gnomes love the world, because they were originally slaves to other races (Fomorians, Kobolds/Dragons, etc). They see the world as a vast and amazing place in need of exploring because they were enslaved. Their lives used to be awful and restrictive, but ever since they got free they loved learning more about the world they worked so hard to escape to. They're the literal ideological opposites of the elves. They don't want to go back to where they came from, because they had nothing then. They're just super grateful for being in the world, making them positive and happy all of the time.
Gnomes are great. They're my favorite "fleshy humanoid" race in all of D&D. Everyone should want to be a gnome, not just in D&D, but also in real life.