even atheists are faith based

Both the atheist position and all believers in God, with or without a logical definition, cannot anywhere near prove their positions but must base their views on faith for several reasons.

The most obvious reason is lack of anywhere near enough information to make a sensible decision in the matter, Many have little or no respect for their ignorance, since one supposes, they are ignorant of it. Most do not even realize they have a totally inadequate definition of God. When we gain new information and add to our knowledge that alone satisfies quite a few atheists.  

Since there more unknowns than known facts in the matter we cannot escape the necessity of faith to fill the gap. The more answers we gain knowledge of, the more we realize we are learning there are even more questions to gain the answer of. Questions require answers when we are aware of them unlike the seen universe appearing that it is expanding, suggesting a bang starting it all. Many forget they are talking about theories and eventually speak of theories as if they were proven facts. Meanwhile the bang theory is a fallacy in logic begging the question.