Brakes are just something that cost money after a while. On my Mazda pickup which I think has been very reliable, I still have changed out the back cylinders, the front calipers, the front pads several times, the front discs, the master cylinder, the brake booster, and a brake line. The cost is not so bad because I did the repairs myself, but OTOH it spent a whole summer up on blocks (in front of the trailer I was living in at the time) while I got around to doing the fixin'.
The only reason the parking brake cables haven't been replaced is when they inevitably seized I cut them off and parked in gear for 10+ years.
You want to see a nightmare car repair bill?
http://my750.com/repairs.htm