Travel insurance is nothing new. In recent years, however, it has attracted more attention and the debate regarding the value of the policies has grown more pronounced. Coverage has also expanded to include business travelers, extreme sports participants, and expatriates, among others. How does a traveler know if travel insurance is worth the investment?Like any kind of insurance, part of the value of travel insurance depends on a traveler's own tolerance for risk. The rest of the value equation involves the cost and length of the trip, the purpose of the trip, and the destination.