Atheist or Agnostic?

[Mudhammam]

 But if there is no evidence whatsoever for God, and there is no evidence whatsoever against God, how can you claim that lack of belief is more "in tune with reality"? As I suggested, if you live your life without worrying about God (or gods, or unicorns), then you are demonstrating your atheism to all concerned. But that's a practical lifestyle choice of your own personal active life. It has no value for the speculative question of whether God exists.

Why can't you walk and chew gum at the same time? I don't live my life worrying whether god exists or not, but I still engage in the speculative question. We treat most propositions bereft of evidence that way.