Social media has become the perfect platform for celebrities. Whether endorsing a product, promoting their latest endeavor, or posting a selfie to show off their toned figures, famous people know how to use Instagram and Twitter to their advantage. Katy Perry has taken over Twitter with more than 46 million followers, and Kim Kardashian is the queen of Instagram with nearly 10 million followers. So it may come as a shock that some celebrities actually refuse to have a social media account. Check out these celebrities who refuse to have a Twitter account and their reasons why.

George Clooney:

George Clooney
George Clooney REUTERS/Mario Anzuoni

George Clooney tells Esquire, “So one drunken night, you come home and you’ve had two too many drinks and you’re watching TV and somebody pisses you off, and you go ‘Ehhhhh’ and fight back. And you go to sleep, and you wake up in the morning and your career is over. Or you’re an a--hole. Or all the things you might think in the quiet of your drunken evening are suddenly blasted around the entire world before you wake up.”

Julia Roberts:

Julia Roberts is to play evil queen
Julia Roberts Reuters

“[Social media] is kind of like cotton candy . . . It looks so appealing and you just can’t resist getting in there, and then you just end up with sticky fingers and it lasted an instant.”

Kristen Stewart:

Kristen Stewart
Actress Kristen Stewart arrives at the 2013 Kids Choice Awards in Los Angeles, California March 23, 2013. Reuters

“Twitter f--ks me over every day of my life. Because people go, ‘I’m sitting next to Kristen Stewart right now’ and then [the paparazzi] show up.”

Jennifer Lawrence:

Jennifer Lawrence
Jennifer Lawrence at the 85th Academy Awards in Hollywood. Reuters

“Everybody was talking yesterday about Twitter and Instagram and Tumblr. It was really confusing me and overwhelming me. I literally started losing my breath. People were showing me these hilarious things and I was like, 'I want to have this.' What’s Pinterest? I don’t have it. I know by the time I get it, it’ll be something else. I bought a CD case less than a year ago.”

Bradley Cooper:

Bradley Cooper
Bradley Cooper Tumblr

“For me, maybe I’m old-fashioned: If I know so much about you and you’re playing a character in a movie, then that’s a lot of work I’m gonna have to do to forget who you are so that I can believe the character and therefore enjoy the movie.”

Chris Hemsworth:

Chris Hemsworth
Chris Hemsworth Reuters

“I think there’s a danger of being overexposed with that stuff. The mystery of who you are is what keeps people interested in wanting to see you on the screen. Also, it’s easier for them to believe you as that character if they don’t know too much about you. It’s hard not to be overexposed these days with the Internet.”