= new reply since forum marked as read
I have some reading to do.
At least that's how I identify myself if someone asks, "what religion are you"? Then I have to explain what Secular Humanism is, but that's alright. 
I came to Secular Humanism through the Center for Inquiry. https://centerforinquiry.org/
which is a fantastic depository of information for Atheists, Secular Humanists etc. I saw Richard Dawkins give a talk there in a very intimate and quiet setting. I'm lucky to live so near the center. 
atheism = disbelief or lack of belief in the existence of God or gods
deny = state that one refuses to admit the truth or existence of
If atheism inherently places the onus on the believer as you say, then isn't the atheist always expressing implicit or explicit denial of god's existence by demanding evidence? "I don't believe god exists, so prove me wrong" condoned by semantic interpretation?
Furthermore it feels presumptuous to place the onus on believers when in fact albeit unlikely, they may be correct. This isn't criminal law where only one prosecutorial side deserves the burden.
In sum, to me it seems that admitting human limitations, I'd rather call myself agnostic than atheist.
Thanks for the input 
I considered myself an agnostic for twenty plus years but after considerable consideration now disavow such a stance. My epiphany was the inability to square the legitimacy of a claim to faith as the basis of belief in an unproven god with the logic of true skepticism of such. They just didn’t balance and for me to continue an equivocating stance in the middle granting credence to both views was untenable.
But then we are talking personal belief/disbelief philosophies here so there is room for us to coexist.
Carry on and thanks for the Sunday morning chat. 
Agnosticism is the belief that the existence of God, of the divine or the supernatural is unknown or unknowable. Atheists do not believe that god exists.
"I don't believe Bigfoot exists" is naturally different from "I just don't have any evidence and probably never will." I accept that proof for god is forever unattainable. You just say you're waiting for the unattainable to show up one day.
Thanks for the input
I'm fine with, most religion, for others depending on the outcome for them. They just have a different Locus of Control.
What Is Locus of Control?
https://www.psychologytoday.com/us/basics/locus-control
Locus of control refers to the degree to which an individual feels a sense of agency in regard to his or her life. Someone with an internal locus of control will believe that the things that happen to them are greatly influenced by their own abilities, actions, or mistakes. A person with an external locus of control will tend to feel that other forces—such as random chance, environmental factors, or the actions of others—are more responsible for the events that occur in the individual's life.
Like other constructs in personality psychology, locus of control falls on a spectrum. Genetic factors may influence one’s locus of control, as well as an individual’s childhood experiences—particularly the behaviors and attitudes modeled by their early caregivers.
Researchers have identified several areas in which one’s sense of control appears to affect outcomes, including education, health, and civic engagement. Overall, such research has generally suggested that those with a more internal locus of control are more successful, healthier, and happier than those with a more external locus.
I love the study of religions, I just don't think I fit. I'm less judgmental and look for the good as well as bad to them. Lots of wars fought and evil has been a result of religion. Also it may have saved others from addictions and harm to others. I can find lots of good from St. Frances and St. Claire and their concern for animals and the poor. But, they too were a little to much into authoritarianism for my taste. I use to watch the Madalyn Murray O'Hair Show late at night on tv. She had some great ideas, but her life was a bigger mess than most and didn't end well for her and her family. She seemed to be full of hate.Like I said, it's all terribly interesting. I subscribe to much of Eastern Philosophy. Those that don't rely on gods.
Perhaps it is all a form of tribalism, like love or hate the other team in todays Super Bowl. Depends on which tribe you're born into.
What ever you think is ok with me, as long as it's for you and not forced on me.