Yes. If you get the trip insurance you pay the insurance no matter what. I guess it is all a matter of opinion. I personally don't get the insurance.
Disney will allow you to reschedule your trip free of charge(I have heard people say they were charged $50 but I have rescheduled before and was not charged). Worse case if I really had to cancel (can't see myself not rescheduling for a later month, but if I had to), it is a $200 charge. The trip insurance is something like $65 per adult(is that correct?) So if I had to cancel it would cost me a few bucks more. If I didn't cancel or just rescheduled I have extra $$ to spend in Disney!
I usually fly Southwest so that helps with flights. If you need to cancel your flight, they credit you the $$ you spent into an account which you have 1 year to use.
So basically I skip the insurance figuring if I could not make my trip (which happened last year), I would just reschedule for a later time.
Maybe for some peoples situation it pays though.