>>>>Why do airlines hate LGW so much? Or what is it about LHR that they love?
Hot spots are all about volume, and numbers. I like LGW too, though it can be sparser for connections.
If you're going to London, LGW is really nice (a not-hot-spot). If, however, you are connecting through London to far flung destinations, then LHR, as party places go, is, like, Ibiza.