I write art/music apps where nobody dies if it crashes in the field. But my perspective is this: because I'm an indie developer, I will get more hate mail and nasty reviews from people when they lose their work because my app crashed (or even if they don't lose their work!). I'd like to avoid said hate mail, and the nasty reviews hurt my business. I think developers at companies are more insulated from the customer and don't think about this as much.