It is very short sighted to use the presence of evil and suffering to prove God's non existence.
Why exactly do you claim this?
The 'Problem of Evil' isn't a negative proof fallacy: it is a argument against there being an interventionist all-good God, since even if suffering was essential so as to allow scope for love and compassion etc to occur there would surely be no more suffering than was essential - unfortunately the prey/predator system has been around long before we appeared, and I'm not convinced that a truly good and loving God needs to still allow, for instance, cases of bone cancer in children.
So, since the above examples are reality, where then is your God: unless of course your God has the inclination to allow the suffering of children, which seems to be the case for those who claim that God exists! Alternatively, the 'good God' notion can be seen as being a primitive superstition that is based on fallacious reasoning, which is my view.