We're all responsible, but no one is to blame. The moral theory of Buddhism is importantly different from that of Christianity. "Sin" is not an operative concept in Buddhism because there is no omnipotent deity to offend. If you behave badly, as the old cliche goes, you are only hurting yourself. And likely other people near you, physically or otherwise, but immoral conduct is not immoral because some sky daddy forbade it. Buddhism abjures metaphysics, focusing intently on what is right in front of us, and verifiably so. Buddhism focuses on concrete, real world harms. The Buddhist path does begin with sila, or morality. The Buddha articulated five precepts that all humans should observe. 1. Do not harm other beings. 2. Do not steal. 3. Do not lie or utter false, divisive speech. 4. Refrain from irresponsible sexual activity. 5. Avoid intoxicants. We can call this the Hangover Rule. If you get drunk, you run the risk of harming other people, perhaps by driving under the influence, of stealing out of need or just hijinx, of lying or gossiping, and of having sex you shouldn't be having. Regardless, you will have a hangover the next day, harming yourself. You will also accumulate bad karma, which a lot of people think they understand but don't. More on karma in another post. In Buddhism, this is all temporary. According to Christianity, if you "sin," the omnipotent deity who loves you will condemn you to eternal punishment. The Buddha talked about very long periods of time that are functionally infinite from the perspective of a human lifetime, but he also stated that we have multiple lifetimes, with the only thread of continuity among them being our karma. Current you will not be aware of future you, but eventually you will awaken fully and exhaust the karma that keeps you coming back for more lifetimes. That was the key realization of the Buddha. When the Buddha died, he died and will remain forever dead. But Ajahn Sumedho describes awakening as "the deathless." The body is the least interesting, important part of any human life. After the Buddha's body died, his subjectivity, his remaining karma, disappeared, to where we don't know.