WTF is the story with Bethesda games? Every single one I've ever played is the buggiest POS I've ever encountered. I just want to play my game

This time, I've been playing Fallout NV (up to 120 hours) and all of a sudden it decides not to load the last auto and quick saves. But it will load the third save file. WTF? Nothing on the machine has been changed. Nothing at all. I'm fucking sick of this kind of shit with Bethesda games. Why is this happening? Why can I not just sit down and play a fucking game?