Not to defend the insurance companies, but I think it is bad faith because the intention of the insurance is to protect the insured from risk from an unforeseen situation, not to attempt to gamble or arbitrage against the insurance company.
Varying levels of deductible choices hard code this notion even further into the system. If you're farther from zero-bound worries you can essentially buy less insurance with a high deductible.
I pretty much pay them just so I don't have to experience the social ramifications of telling people I didn't have home insurance if something did happen.