I don't disagree, but you need to be very careful how you define community. A community that is defined by who is included nearly always cannot escape an implicit declaration of who is excluded, and a community which includes everybody is no community at all. When you have an in-group and an out-group, you sow the early seeds of conflict and discord.
> Isn't this the basis for the family unit?
No, this is the basis for the tribe, with similar concerns about intertribal conflict. Modern societies enjoy such peace and improved quality-of-life outcomes precisely because the state largely subsumes these tribes, and where the state is unsuccessful at doing so (e.g. religious affiliation), has at least succeeded in eliminating much of the worst of intertribal conflict within the state's sphere of control.
I don't disagree, but you need to be very careful how you define community. A community that is defined by who is included nearly always cannot escape an implicit declaration of who is excluded, and a community which includes everybody is no community at all. When you have an in-group and an out-group, you sow the early seeds of conflict and discord.
> Isn't this the basis for the family unit?
No, this is the basis for the tribe, with similar concerns about intertribal conflict. Modern societies enjoy such peace and improved quality-of-life outcomes precisely because the state largely subsumes these tribes, and where the state is unsuccessful at doing so (e.g. religious affiliation), has at least succeeded in eliminating much of the worst of intertribal conflict within the state's sphere of control.