These are often, IMO, the converts to atheism. You know the zeal of converts. A lot of the time, they are bitter about being lied to, manipulated, direspected, ripped off, etc by whatever sect they used to participate in, they feel that a whole lot of irreplaceable time was squandered.
That is not logical. If I were an atheist I'd want every one to still follow Jesus.
I'd want them to behave themselves. Sometimes following Jesus leads to good behavior, sometimes it doesn't. The correlation between religious belief and obeying (secular) laws, keeping ones word, etc, is not very strong.
Are you bitter?