Being a celebrity would be unimaginably hard. I know that might be hard to believe for a lot of people, but think about some of the things you value most in your life: privacy, close friendships, honest communication, safety, and security for your children. When you're a celebrity, all bets are off. People view you as their own personal property and feel they can say anything to you.
If you don't believe me, take a look at the comments on Jessica Simpson's recent selfie.