Surah Al-Baqarah, Verse-237 (2:237)

لَا تَنْسَوُا الْفَضْلَ بَيْنَكُمْ

“Forget not (that you are to act with) graciousness/kindness towards one another”

Being polite and kind to one another is really not a matter of personal choice. It has been commanded.

acrylic on canvas, with 22-karat gold-leaf