More time.
There's never been much that I've really wanted that I couldn't get if I was willing to work hard enough and be patient. It always comes down to a matter of time.
To that end, I suppose lower taxes are something I really want. The higher my taxes are, the longer it takes me to get the things I want. The lower my taxes are, the less time it takes me to acquire anything monetary in nature, and the more time I can spare for pursuing the non-monetary things in life.