I mean most humans just accept that fact and let it be for the smart scientists to figure out the reason. Obviously humans have always had that curiosity and formulated varied theories to support this fact. So it is not a new unusual question. However, I want to get more understanding and knowledge of this age-old question and perhaps, gain insights into the origins of religion and other themes that resonate with most of humanity.
Strictly in scientific terms as the world accepts (it would have to be another post that discusses how religion and science are perhaps complementary and not in direct conflict), the question boils down to – how did the world full of chemical compounds lead to complex biological life forms? At Big Bang, there must have been only core elements/compounds as we understand in chemistry. Gradually, these chemical compounds would have collided, and led to creation of more complex compounds and then at some point in the early age of Earth (assuming biological life does not exist outside Earth), the molecules became quite complex and at the right habitable time, the first biological life form was created.
What led to that creation? Was it a plant or an animal? Was it just a single-celled amoeba? In the next few days or weeks, I will aim to dive into the existing scientific literature/blogs/Wikipedia, to help answer these questions.
As humans stretch their potential to become an inter-planetary species, answers to such questions will become ever more relevant in our pursuit. Exciting times ahead!!