Questions about God and the Bible

If god exists, and the bible is the divine being's message to humanity as christians say it is, I have some questions for them.

If god is justice incarnate, holy, righteous, good, pure and the moral leader of humanity, why has he commissioned and committed some of the most heinous crimes ever inflicted on mankind? Can any other tyrant or super-villain claim the title of 'destroyer of humanity' or 'global infanticide perpetrator' that god seemed so proud of telling us in genesis when he flooded the world. Not only does the god of the bible take pleasure in wiping out the whole world, he takes pleasure in having animals slaughtered needlessly, perhaps it makes him feel better about himself. The celestial tyrant doesn't stop there, he carries on throughout the old testament threatening to kill people because they havn't been circumcised, or because they stupidly worshipped other imaginary celestial beings. The same christians who believe god was justified in committing these atrocities, I imagine are horrified at the lengths Islamic fundamentalist extremists go to when carrying out their Jihad on the infidels. The god of the bible was slaughtering people for the exact same reason the modern day terrorists are, because they worship other gods.

As if the acts of god himself weren't detestable enough to warrant a bible-burning session, he then proceeded to give laws to his chosen people (hang on..... god is an homicidal racist?) that are just as horrific, if not more than the way he behaved in genesis. These laws include things like the following:
-If you have a "stubborn and rebellious son," then you and the other men in your neighborhood "shall stone him with stones that he die." (Jesus even advocates this law in Matthew 15, so Jesus would like me to be stoned to death, what a nice guy) Deuteronomy 21:18-21
-God gives detailed instructions for performing ritualistic animal sacrifices. such bloody rituals must be important to God, judging from the number of times that he repeats their instructions. Indeed the entire first nine chapters of Leviticus can be summarized as follows: Get an animal, kill it, sprinkle the blood around, cut the dead animal into pieces, and burn it for a "sweet savor unto the Lord." Leviticus 1 through 9
-God's law for lepers: Get two birds. Kill one. Dip the live bird in the blood of the dead one. Sprinkle the blood on the leper seven times, and then let the blood-soaked bird fly off. Next find a lamb and kill it. Wipe some of its blood on the patients right ear, thumb, and big toe. Sprinkle seven times with oil and wipe some of the oil on his right ear, thumb and big toe. Repeat. Finally kill a couple doves and offer one for a sin offering and the other for a burnt offering. Leviticus 14

So not only is god a genocidal tyrant, his sense of morality is deplorable judging by the laws he sets for his people, and those three I mentioned are a mere taste of the old testament laws. We find out later in Leviticus 26 that if you don't follow all of the laws in the Old Testament, god will shower you with many curses, which are mentioned in the next 25 verses. So now we have a genocidal tyrant, who has a deplorable sense of morality, who writes non-sensical laws for his people, and if they don't obey them he becomes very vengeful and curses them. This is the same god that christians sincerely believe they have a personal relationship with.

Morality and non-sensical laws aside, the bible is still a laughable book riddled with contradictions, inaccurate or often incorrect historical records that contains ridiculous statements about the nature of the world, or how the world works. You would think that a book penned, or inspired by the creator of the universe would have been able to get simple facts, whether historical or scientific correct? After all, don't christians claim that their god is omniscient? Why would an omniscient god forget what he had written already in his own book, and then write something that contradicts what he had previously written? Why would an omniscient god who also created the universe (and life) write ideas and concepts about life and the universe that mere mortals have since discovered are false, by my reasoning, that would make humanity more intelligent than an omniscient god.

The one thing that really bugs me though, is why would an omniscient, omnipotent god create a universe that points toward his non-existence the more we learn about it? It's as if he wanted us to finally come to the realisation that he doesn't exist, and that his book was written by delusional tyrannical bronze age men living in tents in the desert, who loved running around raping, pillaging and slaughtering every other town, city and culture they encountered.