Before Bitcoin, there did not even exist the possibility of programmable money because no unit of account could ever be guaranteed to actually exist since there was no way to verify said existence. After Bitcoin, we now have a fundamental change where programmable money is now a possibility. So what if we have not found all the possible use cases of programmable money? That's going to be a work in progress for a long long time. You can assert that programmable money doesn't have any real use and you are welcome to have that opinion. Personally I think programmable money will have many uses and will allow for the creation of a more robust and more efficient financial system.