and is therefore treated regarded in the same way Paul likely regarded it... as mail, a personal letter.
As for what I think of 1 Corinthians, I have dismissed it as being someone else’s personal mail.
Its an interesting point; however, the salutations are to a group of people, indicating that the letter is therefore probably not simply personal mail.
1 Paul, called to be an apostle of Christ Jesus by the will of God, and our brother Sosthenes, 2
To the church of God that is in Corinth, to those who are sanctified in Christ Jesus, called to be saints, together with all those who in every place call on the name of our Lord Jesus Christ, both their Lord and ours: 3 Grace to you and peace from God our Father and the Lord Jesus Christ. (1Co 1:1-3, NRSV)
12 Now concerning our brother Apollos, I strongly urged him to visit you with the other brothers, but he was not at all willing to come now. He will come when he has the opportunity. 13 Keep alert, stand firm in your faith, be courageous, be strong. 14 Let all that you do be done in love. 15
Now, brothers and sisters, you know that members of the household of Stephanas were the first converts in Achaia, and they have devoted themselves to the service of the saints; 16
I urge you to put yourselves at the service of such people, and of everyone who works and toils with them. 17 I rejoice at the coming of Stephanas and Fortunatus and Achaicus, because they have made up for your absence; 18 for they refreshed my spirit as well as yours. So give recognition to such persons. (1Co 16:12-18, NRSV)
Beyond that, scripture often has hard sayings that take discernment to interpret. However you do this or whatever conclusion you draw for yourself, you should likely not dismiss the book based only on your current reaction to it.
You may consider that context is important in all cases when reading scripture. For example, Paul was likely talking about women interpreting prophesy in his comments about silence in church (See Post #190). Even if Paul was not doing this, further context may be that he was writing to an audience that was from a certain time and from a certain culture that is different than how we live today.
Paul's take on social matters is written in that cultural context to be sure. What that means to you personally today is another matter. At the same time, this cultural divide also does not make Paul wrong by default simply because, you, a modern person, is reading his writings in your own clearly different cultural context. Its not easy to put these texts into a personal framework and to apply them to today's daily life but this is what is needed.
Some of this may provide insight in your interpretation but, in my opinion, it does not really give credence to dismissing the book out of hand as personal mail.