[midnightclubbed]

Maybe on road bikes but MTB brake pads are definitely a non lifetime part. Replaced my rear pads at the weekend, maybe 0.2mm remaining after around 800 miles or so of riding.

Getting oil on pads is also fairly easy to (accidentally) do. Learnt to be less liberal with the spray oil the hard way!

Unfortunately for bike shops replacing disk brake pads is trivial. Bleeding the Hydraulic system not so much, if it wasn't for the stopping power I'd trade back to brake cables any day.