What a silly thing to say, you can't stop people believing what they believe. Some groups like orthodox Jews, their whole lives revolve around their religous practices. Can you imagine trying to tell them to give it all up just because somebody else doesn't like it?! This country is a democracy, not a military dictatorship, and people have the right to believe in God even if you don't!!
Saying that, people who try to ram their religious beliefs down my throat, by coming round my house or preaching on the street really irritate me. Equally, atheists who belittle those who have faith and try to force their personal beliefs on others are just as dangerous.
As someone else said, live and and let live!