1.Why would Rome arbitrarilly choose a Jew named Yeshua to base their entire state religion on?
Hi, Nash. I don't know the answers to any of your questions but don't mind speculating. By the time Rome adopted Christianity, I think it was a growing movement or religion, with passionate adherents. My guess is that Constantine went religion-shopping and decided that Christianity was his best choice, mostly because it seemed the most likely to succeed.
2.Why not choose any of the other man-God based religions that were already established and popular within the region?
See #1.
3. What made Christianity so popular within Rome? There were plenty of other religions/cults that had extrodinary tales as great or greater than those of Christianity, with a lot more to offer in the indulgence aspect since you seem to speak so much of human nature.
First, I don't know how popular Christianity was within Rome. Second, are you saying that these other religions/cults claimed that their godmen had actually walked the earth as a flesh-and-blood man, within recent history? That was the power of Jesus, I think.
If the others had similar setups, you'll have to educate me about that. I'm unfamiliar with them.
4.Whose idea do you believe it was to form this religion of Christianity? What was their reasoning behind forming this new religion?
Beats me. My sense is that some form of it was already existing and growing before 30 CE (churches in Asia Minor) and then the torch was lit by someone's claim (Mark's?) that Jesus had actually lived in Jerusalem 30-50 years prior.
We need to try and imagine how primitive things were back then. Sure, lots of people would have denied that Jesus actually lived among them, but those few voices could easily be shouted down, ignored, and soon forgotten -- with any written denials destroyed by later zealots or just by time.
5. Where did they get the inspiration for this religion? I've seen you use the reference to forming a religion around Sherlock Holmes, so I figure I would provide some of the possible inspirations for him. Can you name one work of fiction that does not have possible inspirations?
You've apparently confused me with someone else. I think most all literary characters are probably based on some real person, if in the slightest way. In the case of Jesus, I have no good idea, but someone mentioned a 'Yeshu' who was referenced in the Talmud as having lived or died in 93 CE. That would fit pretty well for me, but I just don't care enough to research it.
Thanks for the questions.