Pad life varies by brand and driving habits.
On my 2002 XLT, the original pads lasted 70K miles. I'm on the second set of Ford pads, with 119K miles. I need to inspect them for wear.
My driving habits are to use the OD off button down hills and at off ramps to reduce braking. I also anticipate stops far ahead of most drivers. These habits also increase gas milage.