Religion or lack of it is a very personal thing and people should be tolerated and respected for their beliefs or lack of them – provided, that is, they leave everybody else alone.
In modern Britain there are three main religions, namely (and in chronological order from when they were founded) Judaism, Christianity and Islam. Followers of all three are convinced that they, and only they, worship the true God.
This therefore means that two of them are mistaken and their followers are going to end up disappointed.
How unfortunate to spend your whole life worshipping the wrong God!
Common Sense 
I never thought of this viewpoint, most enlightening! It reminds me of an old bigoted friend of mine Brian who is bisoted with Manchester United. He told me how they were his religion, his faith, his raison d’etre. His conviction was shattered by the ascendancy of the blue neighbours & compounded by the last 18 months events at his ‘church’.His hatred of Manchester City reminded me so much of the irritrievable differences between followers of ISIS to Christians. Man has the inherent propensity to want to hate something in order to justify a death.