First, you have to at least recognize that many christians DO take the bible literally and believe in YEC. If you're not one of them, that's fine... but let's set the record straight so that we don't confuse each other: do you take the bible literally or not?
I am a YEC and I take the Bible literally. But, the Bible does not give the 6000 years figure. Also, the Y in YEC is relative. As long as the earth is not billion years old, it could be called YOUNG. In fact, I do not know how old is the earth. But I think the billion years figure is not real. I know exactly how are those numbers obtained. I personally created a couple hundreds of them. I don't like what I did.
Now that we've explained what probability is, I would simply ask what facts you have observed that led you to believe it was more probable than not that a global flood occurred.
There are, in fact, many. Just name one or two: When you count the amount of water on the earth and the amount of land above the oceanic floor, the water is enough to cover the entire land many times. Yes, the problem is that the land mass is all piled up together, so even its volume is small, it built up and ended up being higher than the sealevel. However, we do know the land mass was not like today in the earlier time. The volume of land was much smaller and the elevation of land in relative to the ocean is much lower (i.e. the earth was much flatter).
I don't know if you get the picture. But this is an important clue to me that a global flood did happen. A related thought is that if this type of flood happened, it most likely only happened once and would not have chance to happen again. This is exactly what the Bible says.
As for the difference between someone who is 30 and someone who is 70... consider this: We spend 18 years developing and being educated just to be self-sufficient in the world. Some spend another 4-8 in higher education learning advanced skills. Working off the 4, that puts most people at 22-24 years of age before they contribute anything of substance to society! A person who dies at 30 only had about 6 years to help advance society, reproduce, and raise their children. A person who dies at 70 had 46 years to do all of that and more!
The difference between someone who dies at 30 and someone who dies at 70? An almost 8-times greater contribution to society.
Yes, the significant point in your argument is "having more time to contribute to the society". And this is also exactly my argument. We did have millions and millions of hours of good work contributed to our society in the history. However, our society DOES NOT become better except the technology. The technology is really a cosmetic smoke screen. It covers the original ugliness of the society which did not advance a single inch no matter how much hours people have contributed to it. Technology gives us TV, but it also gives us bomb. I rather not have the TV but still fight with a sword. Technology prolonged our life a little bit. But the consequence is a huge global problem we are facing now. More people died in 20th Century than any time in our history. Why should anyone live longer to make more useless contribution to the society?
Have you been reading thaumaturgy's posts? I think he might have a few disagreements with you... and he tends to back up his posts with facts... which, you know, kinda helps.
He always disagrees with me no matter what I said. If necessary, he will simply insult me to save his failing argument.
Just take what I explained to you on the global flood as an example. When I said I see some facts of a global flood earlier, instead of saying: "back up your statement", you asked me what are the facts. That is how the conversation here should be. I am not obligated to back up anything I said here. If you have problem with what I said, then simply raise up the question and we will talk about it.
My principle on this is: I do not bother to back up what I said unless there is an argument directly against it, or there is a sincere request for explanation. Those who do not like me may quote the red text out of context to against me. But, hey, why should I care? They have said much worse things about me.