Q: Front Brakes - How long approx should they last? on 2000 Ford Excursion

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On a 2000 Ford Excursion 7.3L Diesel How long/miles approximately should a set of front brakes last under normal driving conditions in Phx arizona on the above vehicle?
(1) Answer
Things like brake life are so dependent on driving habits (how much load do you carry, tow a trailer, etc) and situations (stop and go or long highway stretches), and on the type of friction materials used, that nobody could give you a dependable answer. When I've been in Arizona my driving was lots of long stretches without needing the brakes, and therefore I'd think that brakes would last a fairly long time there rather than, for instance, here in the Santa Cruz Mountains where I live with lots of twisty, hilly, stop and go driving and lots of traffic.
The short answer is between 30K miles and 80k miles, depending on the mentioned factors.