I've had my 4S since launch. I agree it's overall functionality is more than satisfactory without a jailbreak, but there's a few annoying but not dealbreaking issues that jailbreaking would solve - fast text replies, quick access to wifi and airport settings, etc. I'm not hurting to jailbreak for these reasons, but it is annoying that this functionality has been available to jailbroken phones for a good deal of time.