As to your question here, yes, questions about Christian Living should absolutely be on topic. I think that when asking such questions it would be particularly important to identify your point of viewidentify your point of view and the point(s) of view you are interested in hearing answers from to avoid threads becoming contentious, but that it is squarely on topic.
As to the specific question you linked, I think it suffers from being too broad a question. There are several directions that you could focus in on that I think would survive much better in this QnA format.
