Flamenco Have you ever visited Newcastle? From the way you talk, it doesn't sound like it.
Newcastle is a large cosmopolitan city with a good cultural life, whatever your interests. It has a major art centre in the Baltic, a wonderful riverside area and the city is surrounded by spectacular countryside. it is a busy vibrant city. Whatever you enjoy doing, you will be able to do it in Newcastle.
Is it colder than the rest of the UK? perhaps slightly, but housing in the area has all modern conveniences including central heating and wearing a warm winter coat, scarf and gloves when out in winter, is really not that difficult.
I fully understand your worries about moving from friends and family and that is certainly an issue, but that is no excuse for painting an internal picture of the north of England that seems to be more based on the books of Catherine Cookson than the reality of what the north east is in the 21st century.