If you are involved in some legal issue. Police can confiscate your Iphone and they will have detailed information about your movements for an extended period. Even if you were innocent, perhaps the investigation will reveal you were cheating on your wife.
They sell your personal info to spammers. Sinec they also got your location, they also sell this info to a airplane pilot whose job is to drop great offers on you from above.
The prime minister in my country is an avid ipad user. If for example the US wants him dead, they could just go via apple to get his location and smartbomb his ass. (ok, far fetched, but nevertheless possible)
Nice one (no three) mate.
I have one friend who is a Apple fanboy. He uses iPod Classic, iPod Touch, iPhone 3 and 4, iPad 1 and last week he purchased a brand new iMac. I wonder what is going to happen with him