Why is this thread limited to Northerners? Who introduced blood puddings to Britain? The Romans. Blood puddings are popular across Western Europe, especially sausage eating countries - Germany, particularly. You can get them in most European countries that were part of the old Roman Empire. Speak it quietly, but the same applies to haggis. And Scotland loves a black pudding just as much as Northern England.
Most people who consider it vile have never actually tasted it, but I love a well made and spiced black pudding, particularly a fat flecked Bury black pudding.
The only caveat is that you should never eat Black Pudding the day before you submit your poo samples for colonic cancer screening. You will end up having a colonoscopy for your trouble.