One day on my way to library I saw a desk that was written:" Ask an atheist".
I came over and asked:"who built this desk?" That guy, university professor unfortunately (poor students), said:" What did you say?" I said:"Who built this desk?" He said:" people". I asked:" who built your glasses?" He said: "people". I asked:" who built you?" He said:" I don't know". The guy next to him said:" my parents". I said:" I'm sure your parents worked hard everyday to build your eyes, your heart, and everything."
Then they became speechless. They didn't say anything. Some people are rational. If you give them reason, they accept, but majority are biased. They won't accept anything.