1. Which was the point of sacrifices, to cover the shortcomings. Israelite sacrifices were to serve as a reminder that they need a deliverer, because animal sacrifices were not sufficient - they were temporary. Hence the need for a Messiah, the ultimate sacrifice, after which animal sacrifices would cease.
2. Eternal torture is an invention of paganism and perfected by various churches, mainly the official church of the Holy Roman Empire. This teaching is not unique to Christendom, and far predates it. Jews didn't believe in hellfire, neither did the first century Christians. Moreover, hellfire and eternal torture is NOT a teaching of the BIble, but the ignorant masses keep regurgitating it - of course, it is far easier to believe a church authority than to do research yourself.
3. Romans 6:23, Ezekiel 18:4 clearly state that death pays for all sin. We all die, and at death we are even, a clean slate so to speak. There are many other verses too.
4. You can worship Lucifer, who many portray to be the liberator of mankind, who supposedly gave man intellect in the garden of Eden and freed mankind from unjust, vindictive God. So far, the ones who turned to his worship ended up dead.
And finally, how about doing some research before attempting to criticize something. So far you relisted false doctrines of Christianity. You need to recognize that church/organized religion is a political entity. Don't trust it any more than the UN or your government or your neighbor at face value. Prove to yourself what to believe, you will feel better for not being an ignoramus.