I don't think we entirely disagree, Shane. As you say, each of us has a line about this or that subject. the patriotism thing, sexuality, income, class, etc.
Society's lines are the summation of all categories of boundaries which we impose on ourselves and inflict on others.
Thus, the boundaries that society produces, perhaps more accurately described as taboos or morals, are not thin, sharp lines. They are broad, convoluted and fuzzy. The more free the society, the fuzzier and more convoluted the boundaries. I think this lack of social clarity is what makes OT such a vital place. You get people whose apporach to life are as similarly unidimensional, while diametrically oppositional, as Tahloube and Feel The Love. Both are fanatical adherents to their belief systems and neither are tolerant of the beliefs of others.
Or we have the example of yourself. For some reason people seem to think it is important to mention your sexual preference in a consistently belittling way while they think they are being humorous and broad-minded. It reveals neither, IMO. But that's just based on the way I draw my own lines & taboos.
The individual take on personal principles came to the fore front of my mind night before last as I watched, for the first time on a friend's DVD, No Country For Old Men. The movie didn't strike me as all that novel but the villain did have one thing that made him uniquely interesting: the ability to be unpredictable due to his very unique personal values based upon principles he and only he knows and adheres to. In other words despite being an outrageous sociopath, the viewer stays interested and maybe even admires on some level, the poor man just because he is the one character not interested in money or material gain or social norms or traditions. He cannot easily be pigeon holed. His values transcend the mundane and clutch fanatically to the individual morals and rules he sets without perceived outside influence. He is the constant outsider that all of us can relate to, that he is so despicable makes the film quite the dark picture.
I have never stated this before but this forum has been something of an accidental lab rat test. After being forcibly outed by a local street racer/pseudo rival, I did something I have never done outside this forum; I have freely talked, hell even taunted to tears, the truth of my sexual preference. The results as I interpret them have been very revealing and continue to unwrap to this day. I have never behaved this way professionally or personally and would not now for many reasons, some being intrinsic, privacy, consequences of prejudice, and yes the ridiculous but realistic belittling. It is easy to see how the derogatory remarks change you, change your expectations, and hone your sensitivity to prejudice. You see the fences erected, and boundaries placed before so that you cannot ignore them try as you might. I find this funny and serious and worth a good fight which I am always up for. It is still a jungle out there.