Gathering to worship God bids us do one thing at once with all our focus.
This runs counter to the growing tendency to split attention between any number of tasks, giving full attention to nothing.
God deserves nothing less than undivided attention.
From John Muether:

Single-minded attention is strange to us, even in worship, because we take pride in our ability to navigate our busyness with speed and nimbleness. In a multitasking world, Marva Dawn rightly concedes that worship is a “royal waste of time” because we are focused on something that our frenetic culture dismisses as inefficient. And yet, neuroscientists have come to the consensus that multitasking is a myth. We accomplish far less when we juggle several tasks than when we focus on one thing at a time. What is worse, our digitally enhanced distractions are becoming addictive: our brains crave constant stimulation and instant gratification. How ironic, then, that we program our phones with “alerts” and “notifications” for so-called breaking news when they have the effect of diminishing our alertness, prompting thoughtlessness and negligence to the task at hand. In sum, the spirit of our age is inimical to the careful and sustained attention that public worship demands.
Is it possible anymore to resist the persistent distractions of our digital age that obscure the message of the gospel? We need not abandon such a hope. Traditional church practices refocus our attention on the gospel and enable our worship of the transcendent God. Public worship and Sabbath keeping are the most culturally disruptive witnesses for Christians to practice. On a day designed for the soul to feast, we must resist habits that distract us and others. I am trying to go completely offline during the day. It is proving to be a great struggle, but I trust that it will awaken me from the stupor that can come from living in a culture that prizes distraction.

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