[kruczek]

It really depends on the type of software. Sometimes if something unexpected happens and you just catch and report an error, then you may end up in a state which will result in further errors a few hours later. It is much easier to track the root cause, if the program crashes immediately, than having to analyze several hours of logs. And then crashing (i.e. quitting with a core dump) is as graceful as it can be, since it provides all the necessary information to analyze the problem right when it happened.