The truth of knowing the truth

In a day of doubt I sat on an old bench of a bus stop next to a nowhere man and he start to talked, he said
"What u dont know wont kill you. Why bothering much and put too much effort on running away from things you don't even know? Why don't you just simply stayed at home and close all the curtains and window?"

And so i told him that the thing is all the assumptions and voice inside my head, all the story i made because of not knowing things slowly killing me. And i don't know which gonna save me from killing my self or get killed. By running away from all those not knowingness or face the truth that i don't even sure if the truth were really exist.

Then he whispered to my ear
"here's a secret, we're all gonna die any way. With or without knowing about it"