Of course, you are right, but what do you mean by the meaning of life. Рerhaps you have heard, there is such an expression as "pall."
I think this is something to be interested. And what about those who already know everything? Have not you met people who have a moment in their life when they realize that they do not know anything about the meaning of life ...
For example, I can lie on the shore of the ocean, look into the distance and dream, but what's in the distance and it gives me great pleasure and in this I see the point, I'm interested ...