Why does the speaker decide against stopping in the woods in Robert Frost's "Stopping by Woods on a Snowy Evening"?

In “Stopping by Woods on a Snowy Evening,” the wagon or carriage driver is only pausing for a few minutes to appreciate the beauty of the falling snow. He is also taking a bit of this peaceful time for himself, seemingly between errands and obligations. He waits long enough that the horse becomes impatient and questions the stop. The driver has “promises to keep” and “miles to go before I sleep.” He can’t stay. These are metaphors for the way our lives naturally proceed. We can only stop for so long to indulge in a moment before we have to head on to meet other duties and responsibilities. Still, it’s always good to take time to stop and just breathe and relax, too.
https://www.poetryfoundation.org/poems/42891/stopping-by-woods-on-a-snowy-evening