Flow is generally presented as a positive, even ideal, psychological state — but the same total absorption that produces mastery and satisfaction can also become a mechanism for escaping ordinary life entirely, especially in activities with clear, orderly, self-contained rules that feel more manageable than the messiness of real relationships and obligations. The intensity that makes flow rewarding is the same intensity that can make it addictive or isolating when it becomes a substitute for engaging with harder, less rule-bound parts of life.
This isn't an argument against seeking flow — it's a caution about balance. An activity that reliably produces flow because its rules are simpler and more controllable than real life can become a place to hide rather than a place to grow, particularly when the withdrawal from other domains starts costing relationships or responsibilities that don't offer the same clean feedback loop.
Csikszentmihalyi discusses Nabokov's short story about a chess genius so consumed by the game that he loses the ability to perceive his own marriage and relationships as anything but chess positions, eventually leaping from a window trying to escape an impossible position he believes he's trapped in. He pairs this fictional account with the real historical pattern of champions like Paul Morphy and Bobby Fischer, who became so comfortable inside the orderly, fully-rule-bound world of chess that both effectively withdrew from ordinary life afterward. He also notes Robert Oppenheimer's own description of his atomic bomb research as a "sweet problem" — genuinely absorbing, flow-like engagement occurring alongside morally catastrophic real-world consequences.