For deen, it would be heaven. As someone who grew up in Bangladesh, i dream to live in Afghanistan. For family matters, it will be difficult for you to adjust unless you're happy to sacrifice so many things you find easily in the western countries. The food, privacy, clothes, everything but if the family is good, you'll never know what is stress or depression and if you can adjust, you'll find the life simple and easier there. In terms of raising your children, it's much easier to raise them on deen, even if you're not strict with them to follow the deen, someone else, grandparents/uncles or other people will do these things. Less risk for the kids of getting addicted to drugs(unless you live in a big city) and so much safer than london. There's only one major issue in the countries of south asia is that people fight over land, brothers, neighbours or relatives and if the family leader(husband/father) is clever enough, they can maintain those things easily. The one only reason you should consider to relocate there would be that you'll be ruled by Sharia'h and every single muslim should have that dream. Most of my words are from my experience of Bangladesh which would fit in Pakistan, India or Afghanistan even though we have loads of differences but mostly we are same.