I'll start with some observations on sin according to general Christian dogma. In Christianity turning the other cheek, being polite, and being kind are values held in high regard. Now personally, a slap in the face(both metaphorically and physically) is the best thing you can give someone. Embarassment and harsh criticism leads to great personal growth(as brutish as it sounds). Shame is the soil in which we harvest our pride. So being kind will only take you(and society) so far. People recieve way to much pity(anbd repentance) for being stupid in our society. So in Christianity, this weakness, this so called strength, is seen as being righteous. It's meek and unproductive.
As for other sins I can basically agree with the Christian dogma. Yeah it is bad to kill, so long as we want to retain a semblance of society stealing is bad. I can agree that adultery is bad, the purpose of life is to love and ask questions in that order. Adultery makes your monogamy and commitment meaningless. However, waiting for sex until marriage, that's kind of a joke. What is so evil about sex(I really want you to enlighten me on this)? We are made to have sex, we are anatomically outfitted to have sexual intercourse. What does marriage mean necassarily anyways, that you have a piece of paper that says, "Yup, you're married now you can fuck." Pardon my language. But honestly, sex can be a tool of emotional and spiritual communion, and it's not sinful. It can be meaningless, no doubt, which I find unappealing. But as I've stated(and will do again for the sake of redundancy), sex can be wholesome, fulfilling, and beautiful. Oh yes, and gratifying(hehehe). Additionally, waiting until marriage for the sake of pleasing God in the hopes of acheiving a great afterlife goes completely against the eternal return of the same. Live life like you mean it, what if there is NO afterlife, what if this is your one moment? What if there is no eternity?
Now for a closing thought and an arguement against the existence of God(although in the face of nihilism, all arguements are futile for our existence itself is a debatable topic). If God has a plan for us how can we have any free will. You're going to end up wherever the hell God decides to put you. So in the face of God all resistance is futile. You have no free will in light of God's "all knowingness." This, for me, is one of the greatest(although it is one of many) contradictions in the Bible(I hate capitalizing God and Bible). Another thing about god's all knowingness in relation to our being able to acheive anything through god. If I believe in Jesus Christ and the heavenly father anything is possible. What if the ONLY thing I want from god is for him not to know, for him to let me be Brendan Harrison(not Brendan Harrison a creation of god) for one second. All I want is for god to let me be alone for five minutes. Can God grant me my one wish......