ON TOPIC:
To me, offroading includes the consideration of all risks due to terrain, distance or other dangers. Bringing along a firearm is just covering a possible problem in much the same way I would carry some spare parts for possible drivetrain problems. I rank a tire plug kit as much more important and likely to be used so ultimately you only have so much room to "carry". There are some areas of the California deserts that the importance of a firearm moves up a few notches.
As has been pointed out earlier, common sense should be your first weapon of choice. Crossing national borders or into various parks raises important issues to be considered. However, actually bringing along a firearm doesn't make me more suspicious of people or less cautious. A hunk of metal won't have any psychic powers over me be it a firearm or a Hi Lift.
OFF TOPIC:
So how is this different from driving around? Seriously, I do not want to expose myself unnecessarily, nor do I want to take useless precautions.
California has some really crazy drivers but I've yet to have some unhappy driver do more than flip me off or shake a fist. (On a positive note I have had some really nice folks walk up and ask all sorts of questions about the mods to my 4Runner.)
The net makes it easier to stalk someone from the comfort of an office or home while accomplishing other tasks (or at least pretend to work). Cyber stalking can be accomplished at any hour of the day or night, whenever time allows. To actually follow a car, spy on someone's house or follow them to school can take a lot of time and effort.
I recently showed a friend in the Navy how I could piece together their career from a California postgrad school to a Pacific command to a name change in marriage, all without much effort, expertise or any expense. That was maybe 20 minutes of casual effort.
Anyhow, this thread is really about packing heat and I don't want to hijack it much further.