I'm an Atheist and I agree with your article. I sincerely think that Agnosticism is the most sustainable position (scientifically correct "I don't know"), but I'm Atheist for practical reasons, I cannot prove a negative, neither can a Theist. The only problem is that Theism is harming our world with dangerous dogmas and ideologies. I can still tolerate living with Theists who do their things in private without bothering anybody but bottom line is, I'm not tolerating those proselytizing and wanting to influence Policies and Lives of others. With that said, your point is valid, on Agnosticism, the Scientist Neil DeGrasse Tyson is saying the same thing. We don't know a lot of things, even if we know certain things and we should be intellectually humble and always learn, change our mind if proven wrong, evolve ... it's called Critical thinking.