You are not allowed to perform oral sex on a woman because it wastes the female "seed" (female orgasmic fluids). I think performing oral sex is also degrading to the person performing it. It is also dirty. Why not have real sex (missionary position)? That is mutual.
I'm not saying that I agree or disagree but how is oral sex any dirtier than regular sex?
How is it degrading to the person performing it?
Is there a biblical reason for only the missionary position being allowed in your view?
It is dirty both physically and mentally:
1) Physically – because you use this mouth to pray, eat, kiss your children and parents.
2) Mentally – it is actually “going down”, that is lowering yourself.
In the normal sex situation you brains are on the same level and genitals on their own level.
Here is another spiritual explanation.
It is understood that oral sex is not actually dangerous. You can’t get poisoned or get sick. However, there should be limits and restrictions everywhere, that is it is immoral to say that everything can go in bed. In other words, if you don’t have restrictions in one area, especially sex, then you won’t have limits anywhere in your life. That has been proven many many times.
If you justify one thing today, you will justify another tomorrow.