My parents have been married for 16 years and my mum has been unhappy for most of it?

My mum wants a divorce but my dad has been saying that he doesn't want to break this 'happy' family. They fight everyday and hanging out around them is awkward as hell. I can't take it anymore, how do I just tell them to get a fucking divorce
My parents have been married for 16 years and my mum has been unhappy for most of it?
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