My mom'* 05' Town and Country needed brake pads by 26,000 mi. I would say at 50k, it'* definitely time. Do you feel the vehicle pulsing as you apply brakes? If so, expect to see warped/cut rotors. Can sometimes just have them resurfaced at a shop if there'* enough material left to work with. If not, expect to have to buy replacements. Brake jobs aren't hard whatsoever - but they're very important. If you over-torque or under-torque, either situation can be bad. Just go by the book
Oh yeah, if you want to avoid having black crap in your hands over the next week or so, I would recommend a set of gloves to work with. It only took me 3 years of votech to learn that.