Don't you think iPhones should have a startup sound? I've always loved macintosh computer startups, because apple makes them cool, they should really make iPhone/iPad startup sounds. 
That statement right there is an open indictment on Apple's view on silencing your iPhone. You should not HAVE to turn it off to make it perfectly silent!nope...
imagine getting out of the cinema or off the plane and all the iPhone users are swithing their phones on again...
"hello! I gottan an iphone" is one part, the other is the shear annoyance...