And yet, tons of guys have made road trips to Alaska and had the time of their lives, with not a single incident involving marauding meth addled murderers. As far as watching shows like Alaska State Troopers, of course you're seeing all sorts of mayhem; what you aren't seeing are the hours of patrol where absolutely nothing happens. If Alaska has a meth problem, it's the same meth problem that most of the rural US has. I don't avoid West Virginia and the beautiful riding there because they have a terrible meth and Oxycontin problem.
My biggest worry when I take a trip isn't that I'll get robbed by some scumbag; it's that I'll get run over by some nice middle class kid who's texting while he's driving. Don't let fear ruin what could be a spectacular trip. If you need a counterbalance to crime statistics, go read a bunch of accounts from guys who made an Alaska trip (or a Mexico trip, or to Panama, or wherever) and see how well it went for them.
When I ran a criminal investigation unit, one of the things I had to to was compile crime statistics. They're not always an accurate reflection of what your "boots on the ground" experience will be.