Socializing, my Stance

I had met a fellow passenger on the bus home and he wouldn’t take a hint at my ignoring him. He had kept asking about which bus it is in a broken and accented English.

The lady passenger behind me had been ignoring him too, but he had kept pestering her till she had cussed at him to stop.

My question is : why wouldn’t others take a hint at your silence and understand that you don’t care about them at all? Why do I have to say to others out loud to leave me the goddamn alone? I hate the sociable and chatty because I don’t understand as an autistic why they have to at all and could care less about others offline.