I had a couple about Valentine's Day, several more now about Mothers' Day. I suppose I assume that it's for people who've lost a child, or for people who wanted to be a mother but couldn't.
Neither applies to me, and I don't have a Valentine either, but I accept the opt-out if offerred. The emails don't upset me but it's pointless being bombarded with meal deals for two or days out with Mum when there's only me and the dogs. (Happy me, contented dogs)..