"Why should I be interested?"

• "So what?"
• "Big deal"
• Dismissive remark
• "So?"
• 'So what?'
• I don't give a hoot!
• Apathetic comment
• "I don't give a rip!"

Wikipedia Word definitions in Wikipedia
WhoCares was a supergroup formed by Ian Gillan of Deep Purple and Tony Iommi of Black Sabbath in 2011 with the participation of a great number of rock artists as a charity project to raise money to rebuild a music school in Gyumri , Armenia after the destruction ...