Acting "weird" (well or just weird, depends) is something I have contemplated, too. For now I have to confess that I mostly try to stick to the norms (especially in public) except if I have a good reason to do otherwise. I think I might make this one of my tasks to just do some random "weird" acts of kindness.
About the alienation: I don't think that we should do a lot about that. I think enforcing certain rules and having our own memes and terms for stuff already has some strong effects on that. I certainly felt a bit weird when I first came here. And I already was having thoughts like "don't judge something by it's cover" etc. in my mind (avoiding certain biases).
If it's worth saying, but not worth its own post, even in Discussion, it goes here.