Lending isn’t the only use case for the Defi space, although currently it is the most popular. There’s Defi Insurance.
In traditional insurance, customers are screened based on a set of parameters to determine risk. For example, younger drivers pay more than older drivers, males more than females, etc. In decentralized insurance, the insure provider is–you guessed it–code! In DeFi, the code governs the rules which determine rate increases and because of that, the cost to insure is often much less than traditional insurance due to the non-existent cost of manpower and labor.