The 66-year-old termed the site "crazy" and thinks sharing personal things on it is pointless, reported Contactmusic.
"I used to tweet but it's an act of futility. You're not really making any impact. It might be a great promotional tool but just to make small talk, it's crazy. "If you find yourself in a mood when you wanna be a bit controversial and you post something, you suddenly realise, 'Oh my God!' because you've opened yourself up to a bunch of criticism from strangers," he said.
The actor also said he is always looking for new challenges in life.
"Few people who fall don't try to get back up again but they'd be surprised if they tried they might just succeed. I'm always looking for a new challenge. There are a lot of mountains to climb out there. When I run out of mountains I'll build a new one", he said.
J. Jayalalithaa passes away: Her life in pictures
Photos: Shah Rukh Khan, Deepika Padukone, Alia Bhatt at an awards show
Photos: Big B, Iulia Vantur at Himesh Reshammiya's album launch
Photos: Aamir Khan with 'Dangal' actresses at fashion show
Spotted: Twinkle Khanna, Shriya Saran at an event in Mumbai