If we truly are considering 'Safety is our Prime Concern', then the Cabin Crew need to look a little more interested during the Demo
And yet I can't remember an AAIB finding stating "this person died as a result of the cabin crew looking slightly disheartened during the safety briefing".
I'm not saying it's good but if you and I had to thrice daily brief to 200 slack jaws too busy reading their magazines / iPhones to listen, with a minor sprinking of 30 or 40 polite souls, we'd get a little jaded too.