Friend popped in for a coffee after work. We were talking about Xmas shopping, and I mentioned that I'd bought one of those letter to Santa holders (the ones made of felt) for DS, who is too small to realise it is Christmas, but I wanted to write him a letter from Santa telling him all about who he is and what he does and the like. I thought it could be the start of a tradition for as long as he believes in Santa, and then I'll keep the letters and replies to give to him when he's old enough to get some sort of nostalgia pleasure out of them.
Okay, some people may find that vomit-inducing, which is totally fine, but I think it will be nice.
Friend looked a bit sneery at this and said that she didn't agree with lying to small children, and she won't be telling hers about Santa (and will correct them if they do start believing in him). She also expressed concern that Santa is a very disturbing concept (strange man coming down chimney) and that it is putting children at risk of succumbing to 'stranger danger' 
AIBU to think that she is pissing in the mulled wine slightly? I felt a bit deflated after she'd gone and had to eat several mince pies 