I'm sorry to say this but your objections to the bible are based on false premises. If this is one of the reason that you don't consider God seriously, you are mistaken.
And just to show that You have false premises, I will show you all the mistakes in your argument.
1. "a very old man built an unimaginably large boat"
- Noah was one of the men of the bible that lived to be hundreds of years old. this is not possible today for the short reason that the earth is deteriorating. If the bible is true, then God created the earth to SUPPORT life. It was perfect, if you look at the geneologies given in the historical accounts of the bible, you will see that as time progressed, people began to live shorter and shorter lives ESPECIALLY after the flood of noah. this happens because God cursed the earth because of man's sin.
The 'unimaginably large" boat.
- Really? We are given the dimensions right in genesis.
2. "he rounded up every single creature on earth from all corners of the globe
even from undiscovered countries in order to find the thousands of indigenous species"
- "...EVERY SINGLE CREATURE..." I would Love to see where you got this idea. The Bible says he got 2 of every basic kind of creature. that would mean today he got a male and female from the cat family, from the "dog" family (a wolf, or hyena etc) and so on and so forth. I don't even know why I have to explain this...
-"...from all corners of the globe
even from undiscovered countries..."
- we have absolutely NO idea what the earth looked like back then. Notice something, the Bible says that the waters of the flood came from the sky AND UNDERGROUND. that changes alot of things. it is possible there were no oceans back then.
"...to find the thousands of indigenous species..."
- again, we don't know the exact number of animals in the ark. And species? see my explanation of the "kinds" of animals.
3. "he would have needed to include, lions, tigers and dinosaurs, poisonous spiders, scorpions, snakes
which he managed to get on board without any off them killing him or trampling him to death
and he needed enough food to feed all these creatures"
- "... without any off them killing him or trampling him to death..."
- If God created the universe just by commanding it, is he bound by the laws of nature he gives his creation? Is it impossible for God to direct his own creation to a specific place and not Kill the man that will save them? Noah was not on his own in this, God was with him the entire time.
-"...he needed enough food to feed all these creatures"
how is this a problem?
4. "then of course noah had to repatriate all these creatures back to their native homes."
- Umm, no. According to the bible, after they went out of the ark, they did whatever they wanted and eventually spread to the rest of the earth, without Noah's assistance.
5. "now you either have to accept all those things
or you have to deny the words of the bible, the word of god"
- the former
6. "it seems to me to be quite obvious that the people who wrote the bible were not aware of just how many creatures there are on earth"
- of course they weren't. they were only men confined to a single location. But God who created everything and knows everything, he alone knows how all things work which is why he commanded Noah to take in specific kinds of animals. so that they would eventually reproduce and the result is the amazing amount of different species we see to day
7. "also you might say that with god anything is possible, he could have beamed the animals across the globe in a second, or indeed created them all again from scratch. (why did he even need noah)?"
- God has his reasons. If he simply wiped everyting out in a second and recreated the animals, then Noah would not have time to continually warn the people of their sins and God's coming judgement. watching him build the ark served as a reminder of Noah's warnings which all of them chose to ignore and mock. deserving God's judgement. it took Noah 120 years to build the ark, and throughout all this time he warned the people of their sins. If God simply wiped them out, he would still be justified in his actions but because of his love for them, he warned them of what he was going to do and gave them 120 years to change their hearts
8. "WHY DO THEY CLING TO THIS RIDICULOUS STORY, what about it is so fundamental to the religion that it cant be non-literal, or even false, a myth, an elaboration
anything but actually true!!!!!!!"
- i) it is a historical account of God's judgement and his ability to get rid of what he hates. sin.