So you think all believers must take each day of creation in the Genesis account as a day of 24 hours even if you personally don't believe it?
No. I think that the author of the Genesis account of creation meant 24 hour day for the reasons already given, which you ignored, so I have no reason to revise my opinion. You're going to believe whatever makes the Bible god seem kinder, smarter, and more reasonable.
By the way, how long is your sabbath - your day of rest like the Bible god took? That's how long a day of creation is.
Incidentally, whenever you see a description of the Bible god that is less than it could have been, ask yourself why - what purpose would such a description serve. Why did this god need six days to create the universe, and why did He need to rest afterward. Here's my proposed answer:
Once, before the advent of organized, centralized religion, I presume that it was considered sinful for any able-bodied person that could work to not work simply because he wanted a day off. The flocks needed attention every day. If it was planting or harvesting season, there were no days when planting or harvesting didn't occur until the job was done.
Now comes a priesthood and gathering place for religious purposes. The priesthood needs the people to come to it and the temple, which requires that people put down their plowshares, travel to the synagogue for services, and to bring tithes. This would likely take most of a day for many of the people served by any given synagogue, and require that the farmer, smith, or shepherd take a day off work to travel to the priests - once considered sinful sloth. A new ethic was born. It was commanded, which commandment made the top ten list. The sin then became working on this day. And God's day of rest serves as the role model, and why it is sinful to not also take a day off each week.
Notice also the choice of the week, an artificial construct with no astronomical correlate like the day, month, or year, which are inspired by celestial motions and cycles. How often shall these people be instructed to take a day off and bring tithes to the priests? A month was too long. So, the week was invented - the work week to be precise.
Now the story make sense.
We can subject the flood myth to the same type of analysis. Why include a story that depicts this god as a fallible, capricious, unfair, and not too smart creator for using the same breeding stock to repair its engineering mistake with humanity?. Why would such a story be preserved? What purpose does it fulfill?
I think it begins with finding sea shells and marine fossils on mountaintops. Explain that if you're an ancient.
Today, we understand that these mountain tops were former sea floors uplifted by plate tectonics to form mountains. But in ancient times, that was unthinkable. To them, the seas rose to cover all the land. For whatever his reason, God drowned the earth. Being a good god, it must have been deserved. These must have been wicked people indeed. And there's your flood story, and why this flood is global when all other floods witnessed by man were local and didn't cover the highest peaks.
Again, now the story makes sense.
I find it interesting when a person says how complete his life is. And possibly how happy he is, and satisfied. I suppose such a person is satisfied and happy (?) when he is about to die, or when a loved one dies also. Happy, satisfied, and ready to go.
Isn't that how we all want to die - comfortable, at home, in the presence of family, and proud to have lived an upright life regret-free.
I suspect that you're dwelling on this matter because the idea that somebody could feel complete and satisfied without religion or a god belief causes cognitive dissonance for you. It shouldn't be possible. You've been taught that your path ought to be more satisfying than mine. I've tried both. I'm happier now than then.