Also, keep in mind that the Start menu is set to return to Windows 8.1 — possibly as soon as August. When the Start menu does come back it will include the ability to display some at-a-glance data from modern apps such as local weather and calendar appointments. So some modern apps may be worth keeping even if you don't use them right now.
That said, if you ever want any of your deleted modern apps back, they are always available for download from the Windows Store.
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