Lots of money has been lost in other security breaches, oftentimes with much worse consequences because the data is centralized. This hasn't stopped people from shopping at Target for instance.

The nice thing is, security breaches in a decentralized network like bitcoin serve to make the entire network anti-fragile. There's a huge incentive for people with bitcoin to secure their own bitcoins against known exploits and hence make that exploit null while inevitably protecting against similar class exploits.