Atheists are miserable.

[kılıç_mehmet]

On the contrary, its because my life is so full of meaning and purpose that your irrational arguments hold no sway over me. I don't need to contribute to other people to fill some emptiness inside me, like you obviously do. I am the meaning and the purpose.

Well, good for you. You can die without having any significant footprints in this world. But my blood dictates me that I ought to be of service to my people. I would feel empty without it. There is no shame in admitting that.
You are nothing. Meaning, a meaning you have not. A purpose, a purpose you have not. A self-centered purpose is not a purpose at all. For your investment is in vain.