Most of the NT is - Romans, 1&2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1&2 Thessalonians, 1&2 Timothy, Titus, Philemon.
Your choice.
Really?
So,
has nothing to do with you; you don't need to know about the nature of love?
The Lord's Supper, the chapter when Paul talks about Jesus' resurrection and life after death, have nothing to do with you? You are not encouraged by the role of the Holy Spirit who gives gifts to God's people - gifts of teaching, evangelism, service etc; they have nothing to do with you?
Not all of it is; very little, in fact, I would say is directly for them and their own situation.
But even if all of it was, it doesn't mean that we can't learn from it and should dismiss it as irrelevant. Haven't you ever written a letter/email to someone which contains advice, truth etc that someone else who read it might not also benefit from?
As I said, Paul talks about the nature of love, the Lord's Supper, the gifts of the Spirit, what the Gospel is etc - these are universal teachings; spiritual truths for everyone. You miss out big time if you dismiss them as being irrelevant.