If Rasulallah (salAllahu ‘alayhi wa sallam) didn’t engage with the non-Muslims of Makkah, you and I would not be Muslim today. I came to know about Islam because my father is a Muslim, and his father was a Muslim, and his father was a Muslim, and his father was a Muslim, and his father was a Buddhist who converted to Islam. Someone gave my great-great-great-grandfather dawah in the form of love, compassion, respect and courtesy and didn’t label him as a kafir or a waste of time.