My character tends to be a self-insert of me, and I'm a human. That said, depending on class, I often also choose to play aasimar. Not if draconic sorcerer though as I think multiple blood mixes in a character is a bit over-the-top, too much unique snowflake syndrome. As for mechanics, those are always secondary to coolness for me. So party members also always get race based on my vision for the character, not what is necessarily optimal.
