"Gin adds flavor and a depth and complexity that isn't there with vodka. Vodka is a blank canvas, and it basically takes on the color of any other flavor. Vodka behaves like white paint; it really just bring an alcohol proof to the mix. "Someday, I will paint my basement walls with 90 proof white vodka paint, and sit in my bamboo swing chair and read a four-color periodical sports magazine and drink a gin and tonic.
*Thanks to Kimry for the tip.