Do you feel it is OK to question your respective religion? By religion I mean doctrine, belief structure, morals (as defined by your religion)?
The word "religion" doesn't mean the same to me as it does to most people. I question "traditional Christianity" which to me is more of an ideology than a "religion" (according to my definition), but not the general abstraction that I call "Christianity." There is nothing to question in the general abstraction (which is more of a hollow shell).
I don't consider anything mandatory in Christianity. This will probably put me in a different position than most Christians, who believe in "fundamentals" (making them fundamentalists to a certain degree). I don't believe in fundamentals. I believe in "important matters" and dealing with them in an appropriate manner. There are problems to be solved and solutions and answers that must be found, but no concept is eternal and timeless.
That is not to say that God isn't eternal.
I believe that God is very likely to be eternal and to live forever. But if God continues to exist, than we must consider God and factor Him into our decision-making because God is very important.
In the Old Testament/Tanakh people often say things like, "as surely as the Lord lives . . . I will do this or that, etc. etc. etc." The ancient Israelites were not blind followers of ideology. They stated the intention to engage in certain actions and behaviour based on the idea that their God would continue to exist.
It's relative.
What makes something scripture?
It's anything that has sentimental, social, political and communal value that is also considered to be spiritual and to have a divine and heavenly source. It is also deemed important enough to share with others and with future generations. Scripture has a mission and purpose and there is an implicit command that people try their best to fulfill it. What makes something scripture is a matter of opinion.
What makes something 'holy'?
It doesn't affect me. I am not anywhere close to anything that is likely to be regarded as "holy." The only thing I could be "close to" is God. God is holy, but what does that mean to me and the way that I live? God is invisible and takes no form in this world. God wants us to be kind and nice to others so there's little point in my obsessing over what is or isn't "holy." I can't relate to a reality that requires concern over holiness, but I can relate to a reality that requires me to be nice to other people.