OK, this is based on Tiny Army's posts but not necessarily directed at her, do Fi users have little to no expectations of the implicit expectations of the group of people you consider "friends?" Just the general concept of a friend: someone you can talk to, someone you can share yourself with, someone you can rely on, etc. How do Fi users believe those assumptions about the role a friend has in your life play out practically?
Let's take birthdays for example. OK, you don't care about birthdays, they're empty and meaningless and you could care less if anybody remembers your birthday. If you have a friend who does not share your beliefs about birthdays would put aside your own personal beliefs and do something special with or for your friend, regardless of your personal value about that event is? Is it enough that your friend values it so therefore you'll value it as well? Or is it a matter of if it has no value to you, very little would move you towards valuing this hypothetical event?
Would you not be touched that even though you've made it clear that you don't do birthdays, someone remembered yours and did something special for you: a gift, a handwritten note, anything? Or would you interpret the acknowledgment of the birthday as some form of manipulation on the friends part, chastising you for not valuing theirs? Because I think people are talking past each other but really saying the same thing. I don't believe Fi users reason this way, but I'm being fairly extreme to make a point. If the friend is upset that because you have a personal belief that recognition of birthdays isn't a necessary component of friendship, how do you broach that topic with your friend? Do you show your appreciation for your friend in other ways that would make the friend more understanding of your belief? What type of communication is going on on the part of the Fi user in communicating the lack of significance of certain acts to others in order for there to be middle ground.
I agree that some needs and expectations should be articulated explicity but would you really want someone to hand you a list of Things I Expect From You As A Friend? Some of these things seem, well obvious. But I also realize what seems obvious to me is not always obvious to other people.
So for another example you're becoming good friends with a person and they say explicitly, "You know birthdays are really important to me and I enjoy celebrating mine and my friends. I expect you to do something for me on my birthdays and not forget." The tone isn't harsh or demanding, just a simple statement of expectation. I'm being dead serious, I'd look at that person like a rabbit just jumped out of their left ear. I don't know, that seems so presumptuous to me. It seems to me people are expecting a level of communication that is highly atypical in most interactions.