@ Dictation: Yeah, well thanks for your assumption I'm a MS user and your lecturing of my inability to assume all Apple products should be perfect. In fact, I purchased the first Mac in Denver in 1984 and I'm on my sixth Mac (Mac Pro), third iPhone (and have an iPad). As far as I can recall, not one of them was ever perfect out of the box.
As for the beta notation, it states "Siri is available in Beta only on iPhone 4S and requires Internet access. Siri may not be available in all languages or in all areas, and features may vary by area. Cellular data charges may apply" right on the bottom of the Apple Siri feature page and has been widely reported as such. It might be a good idea to check carefully before you righteously declare otherwise.
http://www.apple.com/iphone/features/siri.html
Sure, I expect a great deal from Apple - they've earned it over the years with great products but at the same time, they have almost never been perfect - complex products rarely are out of the chute. The point is, this is new technology and to get one's panties in a bunch with staunch indignation a short time after release because there's a problem, is just an exercize in self-induced frustration. If you just bought a house or a car and had a problem would you declare to the world the house or car was a bust or would you give the maker a chance to fix it? Is the 4s unusable because Siri is off-line for a few hours?
Apple, while not as forthcoming as we would like at times, will ultimately resolve important issues as they have shown in the past. If you have been using Apple products "since the '80s" as you imply, surely you must know this.
Patience. All will be fine.