If every mac, or even a high percentage, had this application quitting problem immediately out of the box, then the issue would be well known to people like me who fix macs for a living. If these quits are common and widespread on your system, it is likely that you have a hardware problem. Specifically, I have seen flaky RAM cause random unexpectedly quit errors.
Instead of spreading FUD, perhaps you should consider if your issue is unique. You have described a problem with a sample set of ONE, yet you seem to assume that this is suffered by every os x user. This is simply not the case. If I were you I would run the Apple Hardware Test Cd in looping-mode overnight. (Even if it passes, you may still have a problem). If you have added 3rd party memory, you should be very suspicious of it.
On my personal systems, I can't remember the last time an App unexpectedly quit on me, but it hasn't happened outside of Safari, ever. Blame Apple for YOUR problem maybe, but please don't infer a systemic problem where none exists. Thank You.
Apple, Stop the Crashes Out of The Box