This isn't really a question — it's rhetorical, and the psalmist already knows the answer before he asks it. He isn't testing an escape route; he's marveling that one doesn't exist. That's a different posture than searching for a way out. It's closer to someone describing how thoroughly they've been found, and discovering that thoroughness is good news rather than an intrusion. Notice, too, that the rest of the psalm answers with extremes — the highest heavens, the depths of the grave, the wings of the dawn, the far side of the sea — not modest, nearby examples. The claim isn't “God is usually close by.” It's “there is no conceivable location, however extreme, where this isn't true.” For anyone who's ever felt like they were facing something in isolation — a diagnosis, a private failure, a long night — this verse says that isolation was never actually real, even when it felt certain.