I have an iPhone 3Gs. I want to KILL the Stocks App. I want to hide Calculator & Weather (using search to launch them). I want to personalize my Unlock/Lock sounds with the Codec sounds from Metal Gear Solid. I want custom Text Message & Email sounds. Maybe I'd like to design a custom background for my springboard.

You know, all the s**t I should be able to do on MY device.

What are your thoughts on JailBreaking? Cydia & WinterBoard? Does Restore really "reinstate" warranty/AppleCare? Will Apple really never know if it happened?

I don't want to "unlock" it for other carriers. I don't want to install 3rd party Apps (other than those necessary to achieve the results above). I just want to customize things that should be customizable. That shouldn't be "illegal"!