Umm, I'm not sure what you meant about this... people have their own faiths and they feels what is right and finds their own ways without following their parents' paths. Islam and Christianity is different. The purpose of Islam is to worship the one and only God (Allah in Arabic) in order to get Jannah (Paradise) ...as for Christianity, it is for people who are the followers of Jesus Christ.
For the same reasons all other faiths do - to pray and rest.
Same reason why other faiths have religious festivals.
Christian Scientists rejoice in the same holidays that other Christian faiths rejoice in.
They viewed other faiths as Antichristian and thought that those people would be punished by god.
Puritans were intolerant of other faiths... If you didn't agree with their views, you could even be killed...
Muslims give more respect to other monotheistic faiths than they give to polytheistic faiths.
By associating with people of other faiths.
To other faiths perhaps
With No Apology - 2006 What About Other Faiths 1-3 was released on: USA: August 2006
Some of the faiths are muslim, hindu, bhuddist, christian and more.
Yes!
Yes, the Church of Christ believes that all other faiths are man made religions.