^massive cultural diversity -kids grow up meeting people from every country on earth , truly international outlook
theatre and art and music - the best of the best, so much choice and so much for kids, much of it free
history - as in, really deep and dense history, from Roman through medieval/Tudor , regency, Victorian, everything^
Yes because all those things are far more important than finding somewhere suitable and affordable to live
. Meanwhile, for the other 90% who can't afford to live comfortably in London, it really is worth looking elsewhere, like the OP is doing.
Of course, nowhere is 'the same' as London but Leeds is also a big, diverse city with history, culture, national museums, big parks, shopping, free stuff, pretty much everything for a great life plus people on normal wages can buy whole houses to live in, imagine that?
Of course I could cite specific examples like the oldest West Indian Carnival in Europe, major music venues, Leeds Festival, loads of big parks and historical houses, Yorkshire Sculpture Park, Barbara Hepworth gallery, close to York if you want more history than you know what to do with, 4 national museums locally, just like those who live 'in London' but not centrally, but of course, they don't count, because it's just not London is it?