Note - This post is part of the 30 Day D&D Challenge.
Day 2 - Favorite Playable Race
I would have to go with the Half-Elf, but it's hard to say why. I can relate to them somehow. They're torn between worlds. In an all-human environment, they're a little bit magical. In an elven village, they're a little bit down-to-earth. In a way they seem sort of androgynous to me - the human side representing the male, while the elf side represents the female.
But that's just roleplay. Mechanically, in most editions they suck. If I'm actually trying to build an effective character, I tend to go full-Elf, assuming it works for the class.