How I long to be similarly persuaded as Paul is that every church, that my church, would be full of goodness, filled with all knowledge, is powerful, and the people are warning one another! What a cool church that would be (Romans 15:14).
Paul's commission from God was to be a spiritual servant of Jesus Christ before God, a priest of the gospel of God so that the offering of the gentiles would be acceptable, set apart by the Holy Spirit. That seems very similar to my commission. I want my church to be acceptable, set apart by the Holy Spirit.
The Gentiles in Macedonia and Achaia were pleased and obligated to give. What a great combo! Why do people think it has to be one or the other? That is the best kind of giving.