I really like the heated seats. I really don't care about the extra weight. If I did I would loose a few pounds myself. I have used them a few times in the morning instead of the heat. They heat up pretty quick and I know they will be nice in the winters here. I can start the car, turn on the heated seats, and brush off the snow. By the time I am done, at least the seats will be warm.
Another point is that the seats come with heated side views and a wiper element. I also enjoy the sunroof.