Christianity is uniquely welcoming in a way that neither Islam nor Judaism are. Judaism is exclusive and you're not invited. Islam is more similiar to Christianity but in many ways mutually exclusive with it, so again not really inviting for us in the western hemisphere with a Christian background.
In any case it is not up to people with a Christian background to decide to get their noses in the traditions of other cultures. That would be culturally insensitive. You should have posed this question to the Muslims and the Jews of America.
That's not strictly true. I suspect those that follow Orthodox and Ultra Orthodox Judaism are exclusive. However, those that follow Reform Judaism and the Conservative Movement support conversion to Judaism, so you are invited.
In any case it is not up to people with a Christian background to decide to get their noses in the traditions of other cultures. That would be culturally insensitive. You should have posed this question to the Muslims and the Jews of America.