Why???

U know, I try so hard to get along with my family members and friends. Sometimes I feel as if I'm wasting my time. I don't understand why someone has to get so mad about absolutley nothing. My DH and I are painting our home. Well, he told me fromt the begginging that he didn't really wanna paint but he was gonna do it anyway. Little did I know he was gonna do it and curse and fuss the WHOLE time. My nerves are about shot.. I am worrying with him just out right being grouchy then him fussing at me because I might have left a streak on the baseboard. I am just ready to SCREAM!!! :( I thought this would be a great way for us to spend time together plus be doing something productive to our home. Obviously not!