Nihilism! Alright, so I was too lazy to read the whole thread, so someone might have said something similar to what I'm gonna say.

Assuming there is no God, i.e. no repercussions for our actions, then we should do whatever we feel like doing. The point is that there is no meaning. Experiencing life doesn't give it meaning. Under these assumptions, we should do whatever we think will gain us pleasure. For some, that means lightin' up every day. For others, it means trying to live as comfortably as possible. In order to do so, an individual would sacrifice certain aspects of their free will and enter a social contract with other people, thus forming a society. According to the social contract, members of society will help each other under the premise that they will be helped as well. Not necessarily meaning communism or anything. Take capitalism for example. A banker lends money to an entrepreneur under the assumption the the entrepreneur will pay him back with interest. They are offering each other a service, each helping each other live a more comfortable life style. Look at it as you will. I'm not sure all of this was coherently written, but I'm tired of writing and don't feel like reading back over it. So, yeah.