For me when I go out I generally get a comment per walk. I carried an Ansco Memar Pronto and an older couple I took a photo of approached me, the man was a collector. The conversation began. I carried a Yashicamat into an art store, the older men behind the counter starting talking to me about when 'those cameras were new'. Carried my Minolta 35 Model II.. well you can guess the conversation there, it began with 'Is that a Leica?' lol. Well no. Brownie Hawkeye, 'Wow, I haven't seen one of those in a long time'.
Older cameras look unique as compared to the cell phones, compacts or dslrs that are currently available. It's not necessarily that they are old, only that they are different. With the elderly people though, definitely because they are older cameras. They wax nostalgic. Do you make long term friendships? Generally not but it really is nice to chat with people rather than walk past them day in and day out.
*I haven't yet gotten a chance to try them all, those that I have collected, so maybe I should start making a list of what people say per camera, see who jumps at what. 😀