TheDAO is an example of a mistake on the path towards building something better/safer. You don't think airbags have ever killed people? Faulty seatbelts? Did Tesla abandon auto-pilot because of a few accidents? Do I need to go on and on? This is a nascent technology, of course there are going to be missteps along the way, and to hold it against Ethereum forever is an incredibly cynical point of view for supposed technologists.