On your own admission you are fat and ugly. You have no physical beauty left to destroy. Despite this, your Master (always capitalize it) is still spending time on you by destroying your mind instead. He's enjoying the fear you feel now. He wants to take your tits away precisley because you like them. He wants to destroy not only you, but anything you love, anything you care about. He will enjoy how the removal of your tits makes you feel less of a woman, less of a person.
The medical technology behind mastectomy and subsequent reconstructive surgery is quite sophisticated now, and I sincerely hope he wastes none of it on you. Instead, your chest should be left completely flat, except for two raised, ugly, unnecessary and totally avoidable scars to emphasize how much this operation was conducted simply to cause you emotional suffering and pain.
If I were in his position I would then bring home a succession of fat titted whores and make you watch while I fuck them doggy style, so that you can watch their big, full, womanly boobs swing and slap. They will be paid extra to tease you for your titless condition, for being a disgusting half-woman. We'll mock you by painting lipstick nipples on your chest and 'sucking' them, drunk posting photos of you on motherless and making you read the comments. I hope I drive you to permanent depression. I'll use your tears as lube.