One of my favourite books is 'Telling Lies For God' by Ian Plimer. In his book he 'zeros in ' on a certain person who's actually a qualified scientist (Geophysicist) who actually pushes the nonsense of Creationism. His name is A.A. Snelling. So go figure. Perhaps Zanyfish you're correct in saying that their faith is too embedded for them to accept that it's world view is totally wrong. I can imagine that such an individual has two sets of thinking processes which they can switch over to the other when the situation suits.

no there too weak to accept the facts that they will turn to dust.

Cognitive dissonance

Theirs a difference between realistic faith and blind Faith I mean it's only logical to have hope in this life it keeps optimistic perspective alive

Yes, it is too central to the core of how they define themselves. Their means of avoiding the onflict is to compartmentalize their intelligence and existence.