Divorce - By mutual consent or on ground of cruelty?

I was married in Nov'12. I was a working professional before my marriage. My then would-be husband (residing at Goa at that point in time) told me of his plans to move to Singapore for a period of 2 years, immediately after our wedding for his work related matter. Basing on this information, I left my well paying job in Mumbai. Just a week before the wedding, he told me that we shall not be moving to S'pore, instead, we would be moving to Mumbai. Needless to say, I was furious, but there was nothing I could do, but look for another avenue of employment. After our wedding, we could not consummate the marriage. The first time we tried it, he could not perform optimally (as in there was no insertion, probably owing to his very small genitalia). After that we tried twice more, even on our honeymoon, but he could not perform. We never talked about ot anymore and nor were we very cuddly/romantic with each other. We were like roommates living in a hostel and still continue to live like this. After our marriage, we both were jobless. He had a contractual job before marriage, but he could not get anything after marriage due to a large career gap in his resume. While we were staying at Mumbai, with his younger brother, he would ask me things like if I am sleeping with hs younger brother. He would taunt me for speaking to me ex-colleagues hinting that they are my lovers. Meanwhile, he encountered for a career progression course and was not serious towards it. He would attend classes and would not put in any extra efforts to prepare for the examination. Naturally he failed the said examination. I got a job after almost 2 years of joblessness in Jun'14 and he got a job in Mar'15. His family also moved from Goa to Mumbai in Jun'14. He is very obese, and I would try to get him to eat healthy and lead a healthy lifestyle. But he has no will to do that and his parents & grand parents also encourage his unhealthy lifestyle. He also has a vile temper, where he could get easily annoyed (imagine someone overtaking his vehicle from wrong side) and start heavy verbal abuses. I had tried to talk to his parents about these issues, but they always discourage me by saying that this is a matter to be discussed between him and me, and I should not unnecessarily bother his family. Lot of small events have transpired, and now I have lost all motivation to stay in this marriage. My question is, now, after 7 years of marriage, can I file for annulment of marriage on grounds of non-consummation. I do not wish to have a nasty divorce and would avoid something that could turn in a blame game. Or shall I file for divorce on ground of mental cruelty i.e. non consummation, unhealthy lifestyle, vile behaviour etc.