The reason why I don't befriend people who are deeply religious

There is a feeling that people who believe in religion must be good,
but in reality, they were much more hypocritical than non-religious people,
and there were many who were different on the inside than they appeared on the outside.
To others, they act incredibly pious and devout,
but behind people's backs, they are up to no good,
and then they think they can be forgiven just by repenting for it.
In a way, they already possess a massive indulgence, so they have this underlying mindset that they can wash away sins of this magnitude.
And above all, they live in a different world, so they are incredibly boring and impossible to communicate with.