You can call it pretending if you'd like(though I don't think someone like
@InternetHero is pretending) but the point is in theory they actually care about spreading their religion to other people in order to save their souls while the Jews really don't which is probably why its far harder to convert to Judaism than it is Islam or Christianity.
Hmm, that is a complicated question as well, I am not at all wise enough to answer it.
All I can say is a bit I know from a prophetic dream I had that came true, so this is purely my own theological understanding of God and mixed with my wholly incomplete opinion of the divine:
I am interested in spreading the Word of Christ, and mainly as to walk in the footsteps of Christ I feel is the easiest way to know God,
He has told you, O man, what is good;
and what does the Lord require of you
but to do justice, and to love kindness,
and to walk humbly with your God?
I think there are
some nonbelievers who can be saved if they walk the right path even apart from religion, many Muslims who know God's love and peace be upon them all, and I am sure many Jews who have faith in their hearts.
Who is righteous before God?
That there is one judge is something all could agree on, and that a Buddhist monk who dedicated himself to finding peace, a lonely traveler who only saw the good in others? Would he perform a miracle in one moment, and deny Christian love, Muslim loyalty, or Jewish wisdom in the next? As well, what virtues have I forgotten that a Muslim or Jewish man may know so well?
Who is righteous before God?
He in my belief is the one who has shown the narrow path, and religion makes it a whole lot easier to be one who can know, respect, and have the "power, love, and self-control" that God gives.
Some who are outside of The Word may well make the journey, but do not know if few or many can walk that road through life alone. It is hard to stand on our own when the whole world always turns against what is right and righteous.
God saves, not me, not anyone. What "Word" do we have? What "wisdom" can be promised by us in this age or any age?
I don't want a religion to spread, I don't want people to be forced to say "Hail Mary," I don't want anyone to do anything they do not want to do, or force anyone to do anything. Because our hearts all must choose, and in that, I hope and pray we all choose wisely. Hope in the Greek sense, of "confident assurance."
I would love though for everyone to turn and see the universe, bigger than we could have fathomed, has a love that is greater still than all those distant stars.
As we all respect and admire lowly things, that it would worth bending the knee, bending our head, low to the ground held taught by time and space to say, "Oh Creator, thank you, thank you that you could love me, love us, and love a world so small, that the darkness would be as light to you, darkness no more, you light of the world O greatest God!"