Here is a guy who thinks we have too much fiber. With even the cable companies reluctantly beginning to deploy fiber in some markets, this has to be an article written to support the wireless industry. The write also suggests the useful life of fiber is only about twenty-five years. He may be basing this on the IRS allowable depreciation schedule of 24 years, but a quick Internet search will turn up many first hand reports of fiber cable operating successfully for thirty years or more.
While the glass fiber does have some very slow signal deterioration, advances in network electronics have been able to not only keep older fiber cables working but actually expand capacity, usually by orders of magnitude.
What the article does not tell you is that broadband and cellular wireless networks require much more frequent upgrades, typically nearly total replacement every five to seven years.
Fiber is still a terrific investment, and yes, it does future proof your community.