Is it normal to hate and love your dad at the same time?

I have a stepdad who has 2 other kids with a cold hearted bitch. he and my mother met when i was 3 and then had nother daughter when i was 6. i think he favors her mor tho, because she is his actual daughter. Well, my stepdad has lots of problems, like a little mentalness, depression, heart problems, weight problems, and back problems. he takes a lot of medicine. Well, it seems he always an asshole. He blames me for everything, makes me do all of the chores at home, constantly telling me i lie, and calls me a lazy fat ass. Also, im a tomboy, so im not really girly, but my sister is, and he constantly asks why i cant be girly like my sister. (my mom does too.) And at the few times he is nice to me, he makes me feel bad about a lot of things, one of them being how he is disabled and cant clean, so i have to do it.but he can be really awsome when hes not being a prick. My sister doesent have to do anything, like cleaning her room, or doing laundry, things i have to do for her. He always says i didnt start doing chores till i was 10, but i know i was doing them before i was even 5. sometimes he gets me so mad, i think of just stabbing him over and over, or killing myself, but then i get guilty. and when i explin things like all of this to her, she just takes his side, not even consitering my side of the story. wow....that was a long rant....srry, didnt know i had that much bottled up inside....well, is it normal to hate and love your dad at the same time?