Sample use case would be a scenario where a person enters an inheritance contract and dedicate percentage of assets held in his wallet to his dependents. Let's say 30% to his wife's wallet, 70% to his daughter's. Such contract could have 2 years curation period and would only get executed if not renewed during this 2 years period. Each renewal would reset the timer. This way, in the worse case scenario when the account holder dies or looses access to his wallet, maximum 2 years after that all the assets would get automatically distributed to his named dependents.