Since no lying means no imagination, most of the consumer products in the film are boring and unimaginative. The computers, monitors/televisions, stereo equipment... even the office decor. Humanity invented these things out of necessity, without any flair. It's more subtle than the advertisements in the film, which are more prominent in their mundaneness, but it goes along the same concept.
As to why there isn't any religion. Go to your nearest bible and read about what Jesus said. Most if not all of his lessons are stories about hypothetical situations, metaphors, or other fiction. Religion is told through stories and since no one can even think about falsehood spreading the word becomes rather hard.