Are you moving to the word hypocrisy?.....
Quite common actually.
Spot something contrary to a faith and ask the perpetrator.....
'Don't you know better?'
No, I'm not talking about hypocrisy. I'm talking more about a tendency I've seen in some religious people to underestimate just how much their religious beliefs impact their real-world decisions.
Not to pick on Truth_Faith13, but just to use what he said as a handy example, he argued that hoping for Heaven doesn't impact this reality, while living as if you had $10 million in the bank when you really don't would impact this reality.
From where I sit, both are going to impact a person's real-world decisions. Even the one potential difference - i.e. that you won't find out that you're wrong about the afterlife before you die - isn't necessarily a difference: imagine someone thought "I don't need to get life insurance, because if I die, my massive fortune will mean my kids are taken care of." That guy might not ever realize that he was wrong, but his decision will still have real consequences.
I think similar arguments can be made for plenty of religious beliefs. Think about all the slaves through history who decided not to revolt because they thought that their owners had been given their authority by God, or because they thought that they would be rewarded in Heaven for what they endured.