Why must RCE's be fatal?

[minipol]

i'm a programmer and such errors can be a real pain. anyway, with the proper coding, they can be catched and dealt with. if you don't catch it, the errors is passed on to windows that then deals with the error for you since you didn't catch it. that's how the mechanism works. so if they would do checks whenever they worked with arrays, they wouldn't be getting this. but it's a pain to program it especially if you didn't do this from the beginning and it slows down the code a bit but makes it more robust