I care, Lottie because that faith that supposedly prompts Christians in this country to run food banks is the same "faith" that hangs gay people from trees in Ghana and gets abortion doctors shot in America.
And encouraging people to believe wholeheartedly what they are told, without asking for evidence, is keeping the homeopathy & psychic hotline industries afloat.
Just because religion is largely under control in this country now doesn't mean that therefore we shouldn't give a shit about it's effects elsewhere.
The question is not why do I care - but why don't you?
Radio waves is as bad an example as gravity, by the way.