SAM:
Lets have some convincing arguments for atheism, that do NOT involve any talk about theism, theists or morality.
Why is atheism the better option?
You have the onus of proof around the wrong way. Why should it be up to atheists to disprove all gods? Should it not be up to those who believe in gods to provide some good evidence of their existence?
Atheism is the default position that would be adopted by any thinking person, in the absense of evidence of gods. Right?
The only thing I get so far is that atheism is about being cool and self-centered; I'd say a lot of theists are already cool and self-centered.
Atheism is a broad "church". Some atheists are self-centred; others are community minded. Some atheists are cool; others are not. The reason atheists have been so slow to organise over the years is that their views are so divergent. All they necessarily share in common is a non-belief in gods.
Was the man who discovered the rainbow workings an atheist?
Why would that be relevant?
Atheism is about discovering the origin of the universe? Interesting. Ok I'll accept that, even if I fail to see the connection. Why are atheists interested in the origin of the universe?
Everybody is interested in the origins of the universe. Some theists believe that they already have all the answers, though, which prevents them from investigating the matter and expanding knowledge.
Is atheism the opposite of theism or not? Because I fail to see any evidence either way.
Finding evidence for a negative is surely much harder than finding evidence for a positive.
Main Entry: 1faith
Pronunciation: 'fAth
Function: noun
Inflected Form(s): plural faiths /'fAths, sometimes 'fA[th]z/
Etymology: Middle English feith, from Anglo-French feid, fei, from Latin fides; akin to Latin fidere to trust -- more at BIDE
1 a : allegiance to duty or a person : LOYALTY b (1) : fidelity to one's promises (2) : sincerity of intentions
2 a (1) : belief and trust in and loyalty to God (2) : belief in the traditional doctrines of a religion b (1) : firm belief in something for which there is no proof (2) : complete trust
3 : something that is believed especially with strong conviction; especially : a system of religious beliefs <the Protestant faith>
Faith is basically belief in something in the absence of evidence. It's irrational.
No you said you lack belief because there is no evidence, so what evidence would you need to attain belief? Any god, take your pick.
Let's make a deal. You tell me which particular God, then I'll tell you what evidence I'd need.
See, what I generally find with this kind of challenge is that theists immediately move the goal posts after any kind of response, by redefining their notion of god.
Disproof of the specifics of many religions is a relatively simple matter. Disproving the general concept of a god cannot be done. But you can't disprove a vague concept of Santa Claus, either.
How does saying there is no proof translate to lack of belief? Belief does not require proof.
Right. But justified belief requires evidence. Unjustified belief is a very weak basis on which to make important life decisions, is it not? If it was, I might "believe" and have faith that the random horse Quick Fox was going to win the Melbourne Cup, and put all my life savings on it. Chances are, I'd be quite disappointed.
Morality as a construct is rooted in religious belief. Rationality has no sense of right or wrong, only true or false.
You're completely wrong about this. Morality is not rooted in religious belief. Religious beliefs, to the extent that they make moral pronouncements, simply regurgitate a pre-existing morality.