Religion get people so emotional because of the fear of being wrong and not knowing. Faith is not knowing. If you challenge the core belief of most people they will not know how to handle it because they do not know what will happen when they die.
Real humility is admitting that we do not know, and to have an open mind. The cosmos is infinite, and eternal, the planet Earth is temporary and very finite.
Not to sound like Dr. Spock, but it is illogical to have finite beings i.e humans trying to define and quantify the infinite being i.e. GOD.
There should be many questions abuot religions because it deals with our most important and only true possession our soul. People spend a good amount of time trying to figure out what to buy, but not enough people spend enough time quesitoning these people who claim to be religions.