Out of the conservative estimate of 10 million billion planets on this universe, I guess laws of probablility would dictate that at least one planet would have all of these specific conditions to create life at some point of their 12 billion year history. One would have the specific properties to be made of solid diamond. One would have the properties of another form of existence (be that life or something else) and so on so forth. Unfortunately we have only seen an infinitessimely small portion of the universe so we simply dont know much outside of our own galaxy yet.
I don't think you fully appreciate the problem Islame. If the values of numerous different constants varied even by a tiny fraction stars and galaxies and even elements such as carbon would not form and there would not be any potential for life. For example if the force of gravity was a bit higher, then after the big bang the universe would have 'ended' in a big crunch rather quickly. If it was a bit weaker, atoms would not have collected into stars and galaxies. If the strong nuclear force were slightly stronger even hydrogen atoms would not be able to form, and if it was slighltly weaker stable stars would not form. If the relationship between the strong nuclear force and the electromagnetic force was off even by a very very tiny fraction heavier elements such as carbon would not form. These are but just a few examples.
Even then, I am sure I have not done justice to explaining the fine tuning problem. If you are interested though, I recommend 'Just six numbers' written by Sir Martin Rees (Astronomer Royal and Professor at Cambridge University). He is an Atheist but a strong proponent of multiverse theories.
On the other hand as you imply I do find it odd that God would create the vast cosmos that we cannot even contemplate with our minds and that we would still apparently be so important to Him. However this is no reason for me to deny He created the Universe. Did He create the whole Universe just for the purpose of humans? That's another question and is open for debate. As a Muslim I don't think we have any way of knowing this. Maybe there are beings on another planet in another Galaxy that have also been created by God. How do we know this isn't the case?