And WHY is "the real thing is available everywhere"?
Because of porn. Since the introduction of the internet - its a safe bet that most children under 10 have inadvertently viewed hard-core porn and it affected them. Porn is now a part of our culture. Its the reason why the casual sex culture has thrived. Porn is why rapes are up.
And porn is to some degree is why marriages are down.
I think it is a lot of things, and porn is definitely in the mix. Yes, technically porn has been around forever. But the amount, accessibility and explicitness (quality) of it are unprecedented in history. Like drugs, it initially has an arousing effect but, before too long, has a desensitizing effect.
Eventually, some a-hole will develop the technology to inject pornographic experiences right into the brain, so the client can’t tell the real from the virtual. When that happens, marriage (and perhaps human procreation) is effectively over.