Certainly know many Christians, here, in France, in the USA and all over- who are 'cultural' Christians- do not believe in any way, shape or form- but enjoy the music, the fellowship, the tradition, the pretty place for weddings and comforting place for funerals- etc. Some even say that unless we all do remain cultural Christians, even if we can't believe, the 'others' will just take over (which is very topical at the mo).
In Leicester, Chruches abandonned by the Christians have become Jain or Sikh Temples, Mosques, Chinese Churches, libraries, dance halls, warehouses, flats even... or derelict.