Three points: It is tradition, and important to bear in mind, that the priest performing the service becomes an embodiment of Christ. This was brought home powerfully to me during one Liturgy a couple of years ago when the officiating Bishop emerged from a cloud of incense bearing the chalice, reminding me of Christ on that first Easter morning emerging from the gloom of death.
Secondly, pagan religions had their priestesses to perform what are for us sexually immoral acts, and priestesses are always linked with lascivious practices. This is not to say that women Christians would suddenly become transformed into harlots if they were made priests, but such an expectation lies deep in human consciousness.
Thirdly, if ever a woman deserved the highest rank in the Church, then she was Mary, the Virgin Mother of God, but she had no title, remained most definitely in the background, to such an extent that there is very little of her mentioned in the New Testament.
I present these things to be pondered on and not to cause any fierce polemic.