Lots of what you say leads me towards saying INTp...
Unless you have some sort of personality disorder, then naturally I would say that your Fe is most clearly Vulnerable.
You seem to acknowledge that your Si isn't that great, convincing me of it being your Role.
Your self-proclaimed indecisiveness and tendency to restrain from interfering with others' thoughts by putting in your own seems like Suggestive Se.
You definitely have a preference for Fi, but it doesn't seem like your most used or accessible method of dealing with information. So probably your 5th or 6th function.
"I don't know what my relationship to society is. I've always felt like an alien from another world, or an anthropologist living among natives in a distant land. As a whole, I see people as slightly more evolved animals, subject to the same basic desires, urges, whims. A prevalent social problem seems to be that we still tend to place superficial, fleeting qualities and traits at higher importance than other concerns. We live in a very now-centric, vain world and don't think "long-term" as much as we should."
I smell Ni.
lol I am not fairly well versed in Socionics but based off what I know, I gave as best an answer I could.