Frustrated beyond my limit....

Why do I bother ? I can't help asking myself this on days like today when he flies into a raging fit over something as small as the grocery list I wrote. He asked me to write a list for him to go to the grocery store tomorrow for us, but when I do it he gives me nothing but pure rage in return. Obviously my opinions, and my desires, don't matter to him. I might as well be a bug on a wall for as much as I matter to him. This applies for grocery lists, as well as simple questions he asks me. Why would a person ask a question if you're only going to get angry at them automatically for their answer ?