Currently, after several mild winters, we're experiencing a lingering cold spell down into the minus 20s F. These newer gasoline vehicles seem to have no problem starting at those temperatures compared to the rigs made before 2000. Yet most people still plug in their block heater to take some of the chill off of the engine. You know that the oil is like molasses at those temperatures. It can't be good for the engine. I have no experience with diesels.
We have no roads in Western Alaska that connect with any roads nationally, just a local road system. It's better this way- it keeps all of the riffraff out or in, however you want to look at it. All goods must arrive by air or barge. I bought my PW in Washington and barged it up in the summer. It takes a month to arrive once the boat departs. It's almost as bad as waiting for Christmas when you're a little kid.
Naturally when you need some type of servicing you can't take your truck back to the dealer. It would be cost and time prohibitive.
The thing that seems to be hardest on the vehicles is all of our gravel roads. With the exception of a few paved city streets, every road surface is gravel. Your truck is constantly subjected to vibrations and jarring. All parts including the engine are coated in dirt and dust. Tires commonly are destroyed by rocks penetrating the tread. Suspension parts and shocks have short life spans. Gravel "customizes" the paint on the lower panels and will also spider your windshield if you're unlucky. With that said, I wouldn't live anywhere else in the world. Just the price you pay to live in paradise.