We may know that these things make no difference, but we cannot just go ahead and do them to please ourselves. We must be considerate of the doubts and fears of those who think these things are wrong.
We should please others. If we do what helps them, we will build them up in the Lord.
For even Christ didn't please himself. As the Scriptures say, "Those who insult you are also insulting me."
References for Romans 15:3
Such things were written in the Scriptures long ago to teach us. They give us hope and encouragement as we wait patiently for God's promises.
May God, who gives this patience and encouragement, help you live in complete harmony with each other -- each with the attitude of Christ Jesus toward the other.
Then all of you can join together with one voice, giving praise and glory to God, the Father of our Lord Jesus Christ.
So accept each other just as Christ has accepted you; then God will be glorified.