It’s not just the lack of answers. It’s a number of postings that show the poster to be unaware of the herd immunity effect. I mean actually unaware – which is different from aware, but disagreeing for some reason (to which I may or may not agree).
Additionally, and now I’m speaking about myself, I know that I am learning new things all the time. Not only here, but on many sites, in magazines, by reading books, by talking to new people, and so on. This means that my knowledge is not perfect. I do not know everything, and some of the things I think I ‘know’ are actually wrong – I just haven’t discovered my wrongness yet.
That’s why I like others to share their knowledge with me, so that I can learn and improve my knowledge.
Conversely, I guess it would be a good idea to also share my knowledge with others, so that they can learn and improve their knowledge. Let’s say that I offer to others what others offer to me.