Christians don’t get tired of touting their moral superiority, and use that as convenient justification for proselytizing. They assert that spreading their belief is the best thing they can do to other people, that it is a moral thing to do.
In ‘Pilgrim at Tinker Creek’, Annie Dillard writes:
Eskimo: ‘If I did not know about God and sin, would I go to hell?’
Priest: ‘No, not if you did not know.’
Eskimo: ‘Then why did you tell me?’
The above quote exposes in just three short lines the lie that lies behind the belief that proselytizing is moral. If the priest didn’t tell the Eskimo (I’ll skip the ‘Inuit’ politically correctness BS) about god and sin, he would have lived happily, and – supposing that god existed – after his death would not have gone to hell. But now, after the Eskimo gained that knowledge, he now has to change his life to worship a god in order to not be tortured after death for all eternity. Objectively, the life of the Eskimo has become worse. The priest has done something immoral: he significantly lessened the Eskimo’s quality of life, needlessly adding to his worries and fears.
If any Christian believed in what they were saying about Hell and Sin and whatnot, they would be careful not to spread this dangerous message, lest they ruin someone’s life. But they do. Why? Two likely scenarios: They either don’t believe their own religious claptrap, or they want as many of those carefree, happier people go down with them.
Moral my ass.