In biology, some bees are tricked into fertilizing flowers because the flower triggers the mating instinct of bees more than even a female bee. The flower is experienced by the bee as better than nature; it is a superstimulus. Of course, a stuperstimulus (like a parasite) ought not to get too good, such that it disrupts the survival and reproductive patterns of the organism it depends on.
An ideal Experience Machine like Nozick imagines would allow the user to jump in and forego survival needs and mating opportunities. Natural Experience Machines, aesthetics and religions, are generally much milder a drag on their hosts' evolutionary goals than this ideal Experience Machine. Superstimuli in nature, just like parasites and naturally evolving Experience Machines, must achieve an equilibrium in which the host species expends enough energy to support its own needs, while also expending plenty of energy supporting the reproduction of the parasite, superstimulus provider, or Experience Machine. (The reproductive needs of the Experience Machine can be substantial. It must not only reproduce by being passed to each successive generation, but must also be defended from new or invasive neighbor Experience Machines.)
And so our co-evolved Experience Machines are demanding, but mild. The most effective, intense Experience Machines would likely interfere with our survival and reproductive processes so much that they would never exist stably in nature, any more than an extremely virulent parasitic organism. If we are willing to enter these new (hypothetical), powerful, addictive Experience Machines, we must be willing to abandon the "evolutionary goals" of survival, organism-level status, and reproduction - to declare them not our own goals. Effective Experience Machines may mean the end of our species, as better and better Experience Machines begin to out-compete other humans (including possible offspring) for human attention. However, this need not be the case. A society that could continue to reproduce itself despite the availability of every kind of experience imaginable for its members could come very close to being a just society. Extinction or not, this is the kindest path for humanity.