No, not mandatory but friendly folks usually do.
....and it's usually the liberal types that bust right in and want to be the center of attention.
So, tell us what you believe.
I
believe that If I was a liberal, I could lie quite effectively about my intentions, play the role of a 'friendly person' with extreme competence, and you wouldn't know the difference.

I
believe that 'being friendly' is an oxymoron, because the ability to be a true friend is character driven, not socially or intellectually.
And, I
believe that if I'm not either
required to "introduce" myself, i will let you make your own decisions about how "friendly" i am -- based on this Scripture passage: As iron sharpens iron, so one person sharpens another. Proverbs 27:16-18
If I sharpen your intellect, it will be through contrast and challenging you to think differently. I don't think like anyone else you've ever met (not a boast -- as you will eventually see) And I
believe that whether you see that as "friendly" depends on whether you value the content of what I say, and whether you trust the my claim about what I am doing.
I am here, for a season. How long a season, I don't yet know... My singular goal is to practice thinking, and like an boxer, I can beat the air (think my thoughts all by myself) and that will equip me with certain skills, but working against another person equips me with others skills.
I have told you why I am here, and what I will do. I
believe you will choose to interpret that however you want, and whether you define that as "friendly" or not is beyond my control.
