Taking that fantasy to the logical extreme, it would be prudent to remove people's brains as soon as medical technology permits, or rather, trim their bodies away from their brains. This would minimize the nutrients required to sustain life in this perpetual-virtual-reality scenario and maximize the number of lives sustainable, as well as cut back on necessary facilities, like waste disposal (all you'd need is a filtration system on your nutrient delivery machine).

Of course, by that time spambots will have reached such a stage that you actually cannot tell them from a real person, and the news will occasionally run features on innocent people who unknowingly married an ad bot, including Jerry Springer interviewing the bot in front of a live studio audience.
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"The devil I'll bring you," answered Hagen. "I have enough to carry with my shield and breastplate; my helm is bright, the sword is in my hand, therefore I bring you naught."