Guys, your curiosity is genuinely appreciable. As the resident '
mulhid' of this forum let me respectfully add on to your understandings...
First, read a bit about what defines as being an
Atheist, by reading here, and then what being an
Agnostic is by reading here.
Then, without throwing a childish-brainwashed-tantrum or emotionally blowing up like some kind of intellectual-suicide-bomber, try to think why such concepts need to exist.
Atheism and Agnosticism are broad concepts and try to understand what they mean rather than just blindly writing them off. (especially when understanding something doesn't mean you have to believe in it, so you have nothing to lose).
One thing I noted from your opinions is that you guys think that a person can either be an Agnostic or an Atheist, but not both. That's not true. For example, personally, I am purely Atheistic to any Islam-o-Christian-o-Jude-o-Hindu-o-Greek concept of God(s), because to my rationale there isn't enough merit in believing in them - especially when these are usually based on
Iman-bil-ghaib kind of beliefs.
And, at the same time, I am purely Agnostic about my views about the reality of what lies beneath / under / behind the existence of this universe - i.e. I am totally silent, non pre-judgmental or pre-believer in such truth and will form an opinion when enough evidence that satisfies my rationality comes to exists.
So, a person can both be an Atheist about something and Agnostic about something when talking about the concept of God(s) - because it is a complex concept.
Also, one more thing, you talked specifically that Atheists or Agnostics are differentiated based on visual proof... Well, to slightly correct your opinion, I would say that they are both equally looking for rational proofs (not just visual proofs) and that while doing so, one actively rebut the man-made descriptions of God(s), therefore called an Atheist and the other just remain silent about it, neither refuting or accepting such man-made descriptions of these said God(s) and therefore is called an Agnostic.
In any case, seeking and requiring satisfying rational evidence is far more logical and appropriate for a man of 21st century than relying on centuries old, obsolete and outdated type of thinking of '
Iman-bil-ghaib' over such concepts. We don't use Iman-bil-ghaib in any aspect of modern life, whereas such level of superstitious kind of thinking was prevalent in every aspect of life up until not very long ago - so, 'evidence demanding' kind of thinking trumps 'iman bil ghaib' kind of thinking and therefore should not just be dissed just because your Islamiyat teacher told you so.
All of this sounds pretty complex, I know, but when you take off the prejudiced spectacles of Atheists and Agnostics being '
bay-sharam, bay-haya dushmanan-e-Islam' and look at just the concepts in an intellectually fair manner, then you'd get it pretty easily.
Thanks for bearing with me for the long post.