Obviously you see no connection with cultural norms and religious practice. That is where your error lies. Acting as presiders at Eucharist evolved throughout the history of the RCC. Ordination and the Sacrament of what you refer to as Holy Orders also went through many changes. Culture of the times DID influence how Eucharist was to be ritualized. Our present day Mass is not the ritual of the early Christian Community. 
God using human instruments has not a thing to do with women's place in Scripture. God was not looking to write us out of the story.
If we as women are worthy of Baptism then we are worthy of FULL participation in all our Community does.