The vast majority of human beings dislike and even actually dread all notions with which they are not familiar... Hence it comes about that at their … - Aldous Huxley

Because our world is not the same as Othello's world. You can't make flivvers without steel — and you can't make tragedies without social instability. The world's stable now. People are happy; they get what they want, and they never want what they can't get. They're well off; they're safe; they're never ill; they're not afraid of death; they're blissfully ignorant of passion and old age; they're plagued with no mothers or fathers; they've got no wives, or children, or lovers to feel strongly about; they're so conditioned that they practically can't help behaving as they ought to behave. And if anything should go wrong, there's soma.

The Savage was silent for a little. "All the same," he insisted obstinately, "Othello's good, Othello's better than those feelies."

"Of course it is," the Controller agreed. "But that's the price we have to pay for stability. You've got to choose between happiness and what people used to call high art. We've sacrificed the high art."

Each person is at each moment capable of remembering all that has ever happened to him and of perceiving everything that is happening everywhere in the universe.

But if one doesn't really exist, one wonders why..." she hesitated.
"Why one makes such a fuss about things," Anthony suggested. "All that howling and hurrahing and gnashing of teeth. About the adventures of a self that isn't really a self — just the result of a lot of accidents. And of course," he went on, "once you start wondering, you see at once that there is no reason for making such a fuss. And then you don't make a fuss — that is, if you're sensible. Like me," he added, smiling.