Paul wrote 1 Corinthians to a community in the middle of a culture war
The church at Corinth had many problems. Some simple kindness would have helped.

Paul wrote his first letter to the Corinthians, now lost, in the fall of 50 CE. The Corinthians pushed back quite hard. They wrote a reply to Paul with a number of questions. In the spring of 51 CE he wrote a long letter back, our 1 Corinthians. This is where we start to build up a more detailed picture of the community, and it is not a pretty sight.
The church at Corinth was a mess. I count 15 distinguishable problems that Paul addresses in 1 Corinthians: partisanship, with the Corinthians factionalizing behind rival leaders (1:10–4:21; 16:10–18); incest (5:1–13); prostitution (6:12–21); celibacy within marriage (7:1–7); Christians married to one another asking about divorce (7:8–11, 39); Christians married to pagans asking about divorce (7:12–16); questions surrounding marriage and remarriage (7:25–40); lawsuits (6:1–11); idolatry (8:1–11:1); concerns about women praying and prophesying in immodest ways (11:2–16); chaos in worship, with speaking in tongues and competing voices (chapter 14); inequality in the communal meal (11:17–34); denials of the bodily resurrection of Jesus and of Christians (15:1–58); the collection of a large sum of money to be sent to Jerusalem (16:1–4); and a change in Paul’s travel plans (16:5–9).
Underlying this mess, there were four main difficulties: a basic failure in relating to one another in love; a dramatic failure of the local church leaders to act considerately in the face of their competition for status and influence; arrogant theological reasoning that denied the importance of the body (which we might call “Christian intellectualism”); and tensions arising from the pressures that Paul’s teaching about sex placed on his converts. Each of these problems would have been bad enough, but when they were all present together, the combination was toxic.