It's highly debatable whether some of Chris' actions were inconsiderate and selfish or justified. Either way, he chose to abandon his family and the prospect of a conventional life for one more attuned with nature and "truth."
Chris is badly beaten by a railroad cop. There are disturbing images of Chris' emaciated body toward the end of the film. In one bloody sequence, Chris shoots and butchers a moose; in other scenes, he shoots and roasts smaller game. He carries a hunting rifle during many of the Alaska-set scenes.
Jan and Rainey are briefly shown making love in their RV (nothing sensitive is shown); a 16-year-old takes off her jeans and propositions Chris, but he declines. One non-sexual glimpse of a completely nude Chris floating on a river. A brief drive-through scene in a nudist camp; when Chris has lunch with a cheerful Danish couple, the woman goes bare-breasted for most of the scene.
Strong, but not incessant. Words include "f--k," "a--hole," "s--t," etc.
International Harvester bus; John Deere; Burger King.
Chris drinks with Wayne and his friends at a local bar in a couple of scenes; Jan appears to roll a joint.