Answer:
The main reason Europeans converted North American natives was because they believed that their religion: Christianity, was the only true religion, and that the Native American religions were pagan practices that should be eradicated and replaced with Christianity.
In order words, more than anything, Europeans converted North American natives out of a eurocentric or ethnocentric sentiment that kept them for understanding that Native Americans had a right to maintain their own religion, and that the two religions could coexist.
