You see, this is where I have a great of difficulty with being a true atheist. To believe that we are simply a biological organism, with nothing any deeper than chemical reactions, is sad. If you can hold your newborn child, watch the sun rise over the mountains, hear children laughing, or even be moved by a beautiful piece of music, and still truly believe we are nothing more than an organic machine, you have my sympathy. If you can find your true love, look in her eyes, and still believe that what you feel is only a chemical reaction to perpetuate the species, you have missed out.
"There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy." W. Shakespeare