replacing Brake Pads

Kinda interesting to read the replies and all good. I'd like to add that my '17 350 DRW w/ 29K seems to have a decent amount of pedal travel now than was new. Tire shop says nothing about how pads look and haver never seen then myself either so really don't know how much is left......especially the front ones. Upon next tire rotation, I'm going to ask the shop if I can see the front pads while they have the wheels off. Last time tho I did change pads/rotors was on my '03 250 and want to say I went w/ Hawk pads and slotted rotors. To make matters worse, several months after I put them on, got rid of the truck.