That could be because you're sick fuck with no self esteem.
Ok so licking a womans butt and having anal sex with her is now sick right? god your such a closeted prude, I bet you bang your wife with the lights off and under the covers straight missionary position with your eyes closed.
So now you got to bring my wife into this? What I do is no concern of yours, I'm not the one attempting to validate an abominable lifestyle by claiming they were born that way. The fact is there is no "gay gene" so a person becomes gay via their environment and until it can be proven one way or the other I'll stick with that opinion. If you wish to subject your penis or tongue to a bacteria ridden asshole then that's your choice.
Ok.