Humour is unlikely to have died a couple of years ago, Threetrees. But people perhaps don't think about it so much. They mumble the name of "Woody Allen" as a kind of talisman and go into a brown study, out of which they never come.
As someone in touch with various different nations, I notice that whether we're talking about TV sitcoms or Stephen Potter, stand-up comedians or books of humorous anecdotes, tastes vary a lot, even within that small continent, Europe.
I feel that, for instance, Germans, Dutch people, and Scandinavians are more attuned to lavatory humour while, for instance, the Poles have a more developed sense of the absurd. Even in Britain, there was a huge sea change when the Monty Python team came along. Before that, British humour was very much more Morecambe and Wise and working men's clubs' stand-up comedians. And Benny Hill's bum-slapping hilarity (which goes down well in the Germanic countries I've just listed).
I personally don't read many books of undiluted humour, finding humour within serious novels more interesting, maybe as a counterpoint or foil to the rest of the story (as, indeed, in Shakespeare).