Thieves steal €30,000 in bull semen from farm in northern Germany

Probably because the actual plot would be nowhere near exciting enough to compensate for the draconian restrictions enforced by ratings agencies for daring to mention human reproduction 🤷

Wasn't that one plot point of Man of Steel?

There is Brassic episode about stealing bull sperm (although from a farm, not a bank).

I think it's S3e01