My Dynapro LT"s have a little over 17k on them and I'm not sure if they'll ever wear out. They came with the truck and I don't tow so I'm leaning towards replacing them with something that will give a softer ride. Life's too short to not get what you want!
I use the keypad and leave the keys in the truck whenever I go hiking, running, kayaking etc. For redundancy I had a door key made and keep it hidden on the outside of the truck should the keypad fail.
Don't beat yourself up too much Jim! It happens! As said above, if that's the dumbest thing you've ever done you have some good ones coming up! At 71 I'm still waiting to the dumbest thing I've ever done and believe me I've tried! :rockon: