Same as any tourist attraction, by offering what its customers want at a price they are prepared to pay. It's a business, as simple as that.
Sometimes my miracle whip is runny! I don't eat it and go get some more. It could be dangerous for you to eat not knowing if it bad or not. If it occurs every time you have miracle whip I suggest going to the store you got it from and ask to speak tobthe manager and get your money back:)
Charles Darwin waited for over 23 years, because he realized the enormous negative effect his theory would have on his culture and church. His wife was a very pious, church-going woman who realized the disastrous results of his theory. She also realized that, while his theory about natural selection (microevolution) was correct, there were many flaws in his theories about macroevolution. Such detailed, and incredibly amazing designs in creation prove that there has to be an all-knowing all-powerful Creator.