Do you think people rightfully crossing crosswalks never get hit, or do you include the cars in the equation too? What about every other type traffic accident that could be prevented from being fatal by just lowering the speed?

It takes almost no effort to find stories like https://globalnews.ca/news/10986468/robie-street-halifax-ped... .

(For reference, Halifax, Nova Scotia is maybe a quarter of the size of Helsinki.)

They had pedestrian crossings already, and that was not the deciding factor. It was the speed limit that kept people alive.

If people like you getting annoyed by having to drive slower is the price for just one person not dying in traffic, that’s already a win in my book.