Travel insurance usually, and I believe DVC's is similar, offers a package of benefits (such as those shown below). Disney does not offer rental car damage coverage which some other plans offer. If traveling outside of the U.S. the medical benefits and medical evacuation/repatriation benefits could be worthwhile all by themselves.
Trip Cancellation
Upgrades/Frequent Travel Awards
Trip Interruption
Upgrades/Frequent Travel Awards
Trip Delay
Missed Cruise Connection Baggage/Personal Effects
Baggage Delay
Recreational Equipment Delay
Emergency Medical Expenses
Medical Evacuation/Repatriation
Security Deposit Protection
Accidental Death & Dismemberment
Travel Assistance
Limits do apply by category, such as: Up to $10,000 per plan term $5,000 sublimit/$200 sublimit Up to $10,000 per plan term $5,000 sublimit/$200 sublimit $1,000 $1,000 $2,000 $500 $1,000 $25,000 $250,000 $2,000 $25,000 Included