Why fiber (to the X)?

Much touted for increased bandwidth speeds the detractors say smaller locations such as residential housing do not need that kind of bandwidth. I think they are both wrong. The real reason to use fiber (single mode – SMF) is to prevent cable changes. SMF is the only communications technology that has no theoretical limits which effectively future proofs it and means you never have to re-trench that cable. Think of it as a storm sewer pipe that never has to be upgraded. Instead of a large expenditure to upgrade the pipe, it might cost something between 5-20% of the complete replacement cost to increase the capacity of the fiber.

http://en.wikipedia.org/wiki/Fiber_to_the_x

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