Why is an arguement titled "evolution" about creation of life? Evolution has nothing to do with the creation of life. A very common misconception (surprisingly consider they teach it in high school science, were you all sleeping like I was?).
Anyway, on the part of creating life, the reason the concept of spontaneous creation of amino-acids (then proteins, the beginning of life) is so popular is because it has been done in an experimental environment. This dates back to my old Biology textbook so forgive me if my recollection is a little faint. A few guys created an environment in which they thought was similar to what the Earth was like billions of years ago (no life yet) and they introduced environmental conditions such as electric storms and such and they noticed that amino acids did spontaneously appear.