Regarding Divorce

I am married for 2 years, I and my husband lives in my parents house (live in son-in-law),right from the beginning he's not taking any responsibility, each and everything my parents are only taking care, so I don't want to stay in this relationship, even though I have informed about this many times to my parents, my parents are not accepting for the divorce even though they are also not interested in him,as I'm the only child to my parents, they are worried about my future, he as also scolded my mother once in vulgar language, he doesn't even shows any respect to my parents, now he's telling your parents only agreed to keep him in their house so it's their duty to look after him,if we tell anything he tells he will create a scene infront of my house, so I'm keeping quite for this sake, can I file defamation case against him if he does anything like this and if I file a divorce does he have to stay in my house till the process gets done because process takes atleast 2 years, I don't want him in my house anymore because my parents are suffering a lot.