These are crappy reasons, sorry to say. You need to cover ALL of the reasons why there must be no God, not only the physical reasons (that we cannot see him/feel him (physically)) Look at ALL the physical evidence before giving your view.
I am still an atheist however, as I have my own reasons.


For example:
How about the argument that God is flawless and perfect, therefore his creations must be perfect vs. the argument of mutation in genes? Why would God create completely useless mutations, for example a (useless) extra arm or leg? I can understand, due to EVOLUTION and natural selection, that mutation is there for a reason - to vary genes within a species, for SURVIVAL.
This is not explained by the Bible, but as I have experienced so far, pretty much everything is explained logically by science, so there I remain in the security that knowledge gives. :)