@de Silentio,
Philosophizing, being the act of questioning, reasoning, and rationalizing is valid in religious matters as in anything else. The answers or beliefs that stem from religious philosophy don't have to meet the same criteria as those found in science. I mean scientific answers must progress within the scientific method.
Science often creates hypothetical answers and beliefs to unfalsifiable questions; pushing the envelope by making guesses and piecing together partial truths into bigger or more accurate understanding. I think theology reaches for truth in a similar maner but religion is averse to doubt, and science thrives on inquirey and doubt. Where religion says 'do not question the text', science encourages testing. The more a scientific theory is tested the stronger it becomes (assumng the theory holds).
Seems to me that one of the great things about human cognition is our ability to make inferences and theorize about all the possibilities and relations of everything, and it is our great weakness to become entrenched in those beliefs, even in the face of reason and empirical observance.
Science is not immune from dogmatically adherent zealots. And I am quite sure that scientific beliefs have emotionally charged influences. The people who put their lives and money into science get very attached to their beliefs just like in religion. Religious beliefs just seem to be more personal.
It is always foolish to consider knowledge to be entirely immutable. So it is never wrong to question, and it is never wrong to theories. It is however, wrong to adopt theory or belief as immutable fact, in science or theology. As for questions that are unfalsifiable, no answer can be wrong until the proposition becomes falsifiable.
Now logic is useful but it is not always used to discover truth, it may be used in debate simply to win an argument, leaving the truth far behind.