When we look back at the Greek, Egyptian, Myan, African, and other historical religions, most of us smile inwardly at the ridiculousness of what they believed. There's no shame, who wouldn't be dismissal of such mythos?
As man has evolved since, so too has his religions. Only, nowadays, our dogmas are complex and intelligently put together as opposed to our earlier ideas. Modern religions make more sense also in comparison, but one trait remains: ridiculousness. When one takes a step back and views Christianity with logic and reason, this becomes apparent. Noah's ark is one example. There are many more fairy tales to be found within the Bible, but I'm pointing out that the Greek's stories can be no more plausible as the reason for the existance of humans and everything else than Christianity.
Religions offer an answer to an as of yet un-answerable question: why are we here? People aren't willing to face the truth; that we can't know the answer. When a juicy deal like Christianity appears, people eat it up. And why not? You have something to believe in, a reason to be good, and a promise of eternal happiness if you serve accordingly.
So what's wrong with being a Christian? It's not the truth, it is not a valid reason for our existance. I'm not asserting that I know the truth, but I will bet my life that Christianity, just like Greek mythology, is not the answer to life's great mysteries.
This is the part where you all disagree, and say that being a Christian isn't all bad and is a much better lifestlye than an atheist's, but take this question: if Christianity is indeed the answer, the truth, why should scientists even attempt to discover new things about the place we live? Science logically assesses the goings-on of the world around us, and ultimately is responsible for our comfy homes, computers, cars, and nice ways of living. But why keep making efforts to understand if all the answers are given to us in one book call the Bible? I believe that if people stopped devoting their lives and mental efforts to non-existant entities, science would take off at an even greater pace, thereby pushing mankind to grow and mature more efficiently as a species. One day this will happen, as science has already begun snuffing out the errors in religion with evidence and logic (ie, the age of the Earth). One day there will be no more death, no more suffering as a result of fear-driven religious belief. There is no doubt the immeasurable amounts of blood spilled on behalf of Christianity, especially in its earlier days. Even today people willingly kill themselves in the name of their God, the Holy War going on right this minute backs this claim.
Science is a safe, logical, and ultimately mature path to follow in this life. How many scientists do you see suicide bombing eachother's laboratories? The search for truth, science, is part of man's great adventure. Why just stop and accept that Christianity is the answer? There would be no reason for science at all. I admit that there is a chance of our universe being created by some great being. But if it exists, the being will be found when man is ready, when our science and intelligent minds unravel more of the universe's mysteries. When that day comes, that great being will in no way be similar at all to the God of Christianity, just as it won't look anywhere near like that of Zeus, or the Buddha.