The reasons are non-linguistic - I emigrated partly to get away from the culture of my birth. I want to heavily curate my kids’ experience of that culture and teaching them the language isn’t going to help that.
To me, giving your children a second language is an incredible gift. Setting the pathways in the brain that separate concepts from the written and spoken representation, the abstractions of different grammars, etc, is very valuable. And something that I have really valued as I grew older.
But I (superficially, of course) understand perhaps why you'd like curate their experience of something you took fairly extreme steps to escape. That might well be the greater gift.
Appreciate your perspective -- thanks for sharing.