Saying Daddy.

Not wanting to offend those who do, but when I hear someone calling their SO "daddy" drives me insane and slightly creeps me out. My SO and I both agree that calling him daddy is a no go which is a huge praise, but I was just curious on everyone's thoughts on it? From those who do call their partner that and those who don't. Why does it make some of y'all really horny saying this and why does it turn some of y'all off? My reasons for it is because I specifically call the man who helped create me daddy, so my mind IMMEDIATELY goes to him and he is the last person I want to think of while I'm getting my brains fucked out.