first of all you have dismissed the idea of God immediately..."God is an idea", let me tell you I came to God through reason, I consider myself a man of reason and in no way should a Christian come to God in blind faith (as lovely as that is) but sadly most people, agnostic, Atheist and Christian alike neglect looking at the evidence and come to a conclusion, I do not have the space or time right at this moment to outline in detail why I believe in God through reason but I can lay a foundation but it will raise more questions.....first of all.....if I am to come to your way of thinking it would mean believing that the universe came from NOTHING, 40 years ago scientist believed the world was eternal now we understand that the Universe had a beginning 13 Billion years ago, well science tells us that....and take this is.....SOMETHING CANNOT COME FROM NOTHING, everything that exists HAS to have a cause....if I am to come to your way of thinking then I have to say, either I don't know or the universe just simply POPED INTO EXISTENCE....surely that can't be right! The universe by the laws of Physics has to have a cause, and that cause MUST transcend time, space and physical matter since whatever created the universe created these things, secondly the ordered universe.....How do you account for the complexity of the universe? The universe works mathematically, everything is ordered and appears designed for human life, th else's of physics Hang on a razors edge in order for human life to exist, look at the rate of gravity, the Earth distance from the sun, water on the planet, ozone layer, the moon hanging us on a tilt, all of this and much more if you changed by a hairs breath, human life could not exist....thirdly the law of morality and you touched on this, if God does not exist then OBJECTIVE Morals, values and meaning cannot exist, now by this that does not mean YOU do not hold these things of course you do, but if God does not exist the morals you have are simply in your head they are an illusion to the devastating reality that nothing is WRONG or RIGHT it is just a smokescreen, but Objective Morals DO EXIST, Rape is wrong weather anyone believes it is or not, kindness and Love is really right, moral values are written on the heart of every man, sure they can be disobeyed but they are there nonetheless, the Athiest is in a dilemma here, on one hand he said God does not exist so we are simply a mixture of atoms, blood guts, we are result of NATURE nothing more and so ultimately we mean no more than a swarm of Mosquitos, and so he says there is no Objective meaning to life, but then down the local boozer he immediately jumps out of that worldview and shouts at someone who said that he beat his wife up, and shouts....."That's Wrong!".....well I presume he wants everyone to feel that way and so is appealing to some Wrong or moral law that EVERYONE should indie by. One final note on the situation on poverty....it would be interesting to go back to the century and speak to the millions that believed legal slavery in the west was just a standard reality that would always exist....how wrong they were, man rose to that evil, poverty is a complete injustice and in time we will understand that more and more, since live aid 30 years ago the reality is coming to everyone's homes weather they like it or not.....the above is such a small version of the reasons behind the existence of God it is almost childish, if you havnt already you will find various lectures on YouTube or the Internet has great recourses or I as someone who takes this seriously as a committed Christian am happy to go into much more detail with any questions you have, all I will advise is that it is a journey, it took years of investigation to come to the conclusion that God exists, and Athiesm is seriously flawed and contradictory