I am in no way at all claiming to be representative of... well anything really... But here's my thoughts:
I am not particularly interested in chatting before a cruise. I have joined roll calls though in the hope of maybe getting useful information/inspiration. I have found some good info both in roll calls and the general forum and for that I am grateful!
I am a solo traveller, but I'm perfectly happy being solo. I cruise to relax, read books and experience nature/places/culture. Not to meet people. (Having said that, I have to say that there are so many nice people out there, but a small chat waiting for the elevator or whatever is enough for me. Thank heavens most people are more sociable than I am!)
Meeting the officers? Nah, no interest whatsoever!