Just other unnecessary added expense we the consumer must eat. Well I for one would like to drive my car more than 4 months out of the year, so I'll be buying all-season tires come this fall.I can't disagree with you there. I don't see a problem with them offering both options (edit: of course I don't expect them to have all the options available at first-year launch. Heck, I couldn't even get Active 360 without the Pano roof, which you could get on the base GT. I'm more upset about that than I would be about a tire option, as I wanted the steel roof. At least one can be changed pretty easily afterwards, and one cannot be at all. :-( ). I prefer it coming with summer tires. Of course it helps with the 0-60 times, and it also accounts for the 10 mile loss in range.
I can absolutely see why people like all season tires. I always get rid of my all season tires right away and buy dedicated summer and dedicated winters for my cars. I buy dedicated winters for my wife's vehicle, but put all season on for the other 3 seasons for her.