I have a Maid of Honor but my groom doesnt want a best man...

Originally we opted out of having a bridal party to lessen the drama of clashing personalities, not wanting to wear this or that, and jealousy and rivalry amongst friends... I was ok with that for a while but out of everyone I knew I felt my sister in law deserved to be my maid of honor... So, without telling the fiance I asked her. Its been thrown in my face COUNTLESS times that I changed my mind (I have every right to change my mind right?!) and I asked him to pick a best man... Woah, the fight that sparked! We went back in forth about our original decision, and how he didnt have anyone he felt was worthy enough to fill the position... I feel weird that Im gonna have someone standing up there and he isnt. Not to mention having to explain over and over when people ask who his best man is that he doesnt have one and deal with the questions and disagreeing looks like their disgusted with it... Does anyone else have a groomzilla?!