Can I offer a perspective from the other side?
I think for some people, it really is a case of are people scared of talking about infertility?. Because they are.
I have a close friend who is going through this and I desperately want to be supportive, but it is hard. Not that I mean that in a self-pitying way at all. It's just... I worry a lot whether I'm going to say the right or wrong thing. If I ask her questions about it, am I going to ask on a day when she was feeling OK and now I've just made her sad again? Does she just want to have a conversation for once about the telly or her job, and not feel she is defined by her current infertility? But if I don't ask, because I think she might not want to be asked about it constantly, is she then thinking that I don't care and I'm not interested?
Similarly conversation we do have about normal life - I am fortunate enough to have DC, but because I don't want to witter on about DC when she is going through a horrible time, my conversation might sound a bit limited. So I worry that if I don't mention DC ever, she might be thinking, FFS, I don't want people to hide half their life from me. But if I do mention DC, she might be thinking, really? You want to talk about children with me?
It feels like a minefield sometimes. And equally, it's not something that I feel overly comfortable explaining to my friend, because that feels like making her problem about me, which it clearly isn't.
I'm very sorry for anyone going through this
But I just wanted to explain why some friends might seem useless. It might not be deliberate - they might be trying to work out the right way to act and unfortunately getting it wrong.