It was a work designed for a specific group of people for a specific purpose. So it is no wonder it is a closed book for anyone else.
You are speaking mostly to folks who are not too hip on the whole idea of binding commentaries on scriptures, canon law, etc. A goodly proportion of protestants are even opposed to creeds/statements of faith. Most will try to go it alone.
That said, the OT is not a diffucult row to hoe, IMO. It just has several James Clavelle novels' worth of content. Give it the time it is due and don't forget that you'll have to learn the history of the region to make some of it more accessable.
As to fistful's original questions:
I was wondering what significance our various Bible-readers attach to them. Are they just quaint instructions for a by-gone era? Is each law symbolic of some moral lesson? What use are they today?
For Christians, Paul & Peter nailed that one by bringing the Gospel to all nations.
Romans 6:14 For sin shall not have dominion over you: for ye are not under the law, but under grace.
Romans 10:4 For Christ [is] the end of the law for righteousness to every one that believeth.
Ephesians 2:15 Having abolished in his flesh the enmity, [even] the law of commandments [contained] in ordinances; for to make in himself of twain one new man, [so] making peace;
Hebrews 10:1 For the law having a shadow of good things to come, [and] not the very image of the things, can never with those sacrifices which they offered year by year continually make the comers thereunto perfect.
Yes, there is more to it, but it is pretty apparent that the mosaic law intended to govern a people and their particulars and was not meant to govern all of humanity.
I think the law was what Hebrews 10:1 said it is: a shadow of good things to come. Those who are Christians do not have to watch the shadow of the law for guidance, we can watch the fulfillment of the law in Christ.
Christians would be wise to have an understanding of them and how they were to be observed by the Jews. Some have ethical content, some are Good Ideas
TM generally, some are just commands from God to the Jews and beyond our understanding as humans. Spending too much time contemplating the proper dress of a Levite priest will yield up little. Such time is more fruitfully spent elsewhere in the Bible, IMHO.