Technical problems resulting in people losing money happen all the time outside of the Bitcoin economy. In fact, the way these recent events were handled by Bitcoin developers and the community are way more encouraging than, say, actions taken by Visa after someone supposedly stolen a million credit card numbers.
So, philosophically speaking, Bitcoin encourages people to start thinking about being more responsible about their money safety (which they anyway have to do, regardless of what they use, Bitcoin or a bank), at the same time providing a much better way to perform transactions and save for the future.