It would be awesome if someone didn't start a thread on here saying that they thought Creationists were misinformed... at least.  And then that snowballed.  When you do stuff in off-topic forums like this, then you get that.

You do ask a good question.  Why is God different than Santa Claus?  What compels the human brain to consider a God entity, but abandons Santa Claus.  You have the next few years to do research into neurotheology to get answers to that.  You may find some interesting things.  I would suggest starting with the book "How God Changes Your Brain".

First off I'd like to say that I admire the fact that you are speaking based on knowledge rather than based on emotion as many people do when arguing these sorts of things.  That being said, I have some disagreements that I'd like to address...

If the greeks and romans were so tolerant, then why is it that for 300 years both their private citizens and political leaders were arresting, giving the death penalty to, and even barbarically murdering Christians for no other reason than religious disagreements.

Ah, you do know your history!!  

You make valid points and speak truth.

Regarding your first point.  I do understand that the emperors did have that particular reasoning, however I don't consider it to be a justification.  They were lying to the people by claiming to be divine and nobody should have been worshipping them in the first place.  Just because the Christians refused to believe their lie does not justify murdering them.

Also it wasn't only the emperors who were killing them, but run of the mill citizens would launch there own attacks against the Christians that were motivated by nothing more than ignorance, bigotry, and unfounded fear.  Some of the attacks were based on the fact that the Christians "drank the blood of Christ" and so the people considered them to be cannibals and wanted to kill them because of that.

As far as constantine and his incorporation of Christianity into the government, to my shame I don't know a whole lot about the cultural shift that took place after this.  However, I do agree that when the government is allowed to use the church as a mouthpiece things tend to go downhill fast.  I know that many people have been killed in the name of Christianity as a result of this (many many many who were killed were Christians themselves who were trying to promote true Biblical Christianity i'd like to note in fairness.) 

I'm glad that your willing to actually debate the scriptures themselves it makes for a more smooth debate.  These actually are points that I was confused about at one time before I began to become more familiar with the scriptures.

Jesus said that the law would not pass away until it had been fulfilled, and so then it was fulfilled when he was sacrificed.

Jesus also gives us a glimpse into why some of the old testament laws were given when he explains that moses had allowed the people to be able to get divorced because their hearts were hardened, but that is not the way God originally intended it.

Also, there are even some old testament references that indicate that the old testament laws were to be temporary.

Isaiah 28:

11Very well then, with foreign lips and strange tongues

God will speak to this people,

12to whom he said,

“This is the resting place, let the weary rest”;

and, “This is the place of repose”—

but they would not listen.

13So then, the word of the LORD to them will become:

Do and do, do and do,

rule on rule, rule on rule;

a little here, a little there—

Whoa, way to take things out of context there, buddy. First of all, that has nothing to do with what you said. Nothing. It doesn't even have to do with conquering anything, or raping any little girls. 

In the chapter of 2 Samuel, God is punishing King David for being sinful. 

Here's part of the bigger quote: 

"Why, then, have you disobeyed my command? You had Uriah killed in battle; you let the Ammonites kill him, and then took his wife! Now, in every generation some of your descendants will die a violent death because you have disobeyed me and have taken Uriah's wife. I swear to you that I will cause someone from your family to bring trouble on you. You will see it when I take your wives from you and give them to another man; and he will have intercourse with them in broad daylighht." - 2 Samuel 12: 9-11

I just literally put a bible on my lap and wrote from it. 

Please, before you try to discuss something and say they don't know anything, do your homework first. 

Edit for spelling mistakes.