Siri is a gimmick... I use out the talk to text feature a lot more, thats the main feature right there (nothing new in the phone world). More often, when I do use it, it doesn't work or doesn't understand me properly.
I only bought the iphone 4s because I CAN! I buy every iphone, if apple made iphone 4s with green casing and priced it $200 extra, I'd buy it because I can, because I don't mind paying for it and I want to have the top of the line. When the iphone 5 comes out, I'll buy it too regardless of the features because I can. If I cared so much about $$$, I wouldn't have bought the 4s, hell no lol.
And it's not that I'm rich, just something i don't mind spending money on like a phone or nice pair of headphones. But for example, I wouldn't pay $5 for an alcoholic bevarage in a restaurant lol, way to expensive, it even hurts me to pay 2 bucks a for a coke.