I have this fear that wireheading will result in a class divide, in which there are exploitative wireheads that permanently enslave the rest of the population to their own pleasure, only emerging from the wire for situations that require their attention.
If the scenario you envision has people who are capable of wanting to emerge from wireheading, then you're thinking of an inferior form of wireheading. The form I envision is not just a high tech virtual version of the exclusive resorts and penthouse suites and skyboxes and yachts and other luxuries that the elite class can already enjoy in blissful isolation from the people they already effectively own. It is a replacement for all of that. It is a replacement for everything. It is permanent satisfaction.
The entirety of human history has been something akin to a series of increasingly elaborate efforts to design a pole to scratch one's back, because one can't reach it with one's own hand, and because natural selection has left us highly susceptible to the delusion that there's something more "authentic" and "fulfilling" about using a pole. But the itch never really goes away, because, to mimic this thread's trend of personification, the game is rigged against us by our genes, which need us to keep using poles. Wireheading represents a means of permanently wrestling control from our genes, of finally snatching the carrot that they dangle in front of us our whole lives and getting rid of the stick.
I tend to think that someone who has a child that they care about would never allow this to happen.
I tend to consider it an act of callousness if not cruelty to bring children into this world at all. In practice, what people care about is a spot on the map representing their children. They can be and often are determinedly oblivious to the actual breakdown of variables that impact their children's welfare. They can be easily fooled, in other words, into allowing harm to come to their children or actively inflicting it themselves in the very name of helping their children (see circumcision, gay deprogramming, the vaccine/autism "controversy", the doctrine of hell,
this thread, etc.), to say nothing of the harm they can be fooled into inflicting upon their children and the rest of the world during those times when their maternal/paternal instict subprocess isn't active.