Why was the transition to agriculture was a slow process for the paleolithic era?

What is the largest prehistoric mammal ever? Did Poseidon have offspring's with humans? Are yaks extinct? What is an osteoderm? What would a normal day be like for the people in the paleolithic era? Coal began forming during the Carboniferous period Which life forms or materials of the period eventually changed into coal? What were the things before plastic? What types of technology were there during the paleolithic era? What method did hunter-gatherers use to hunt large animals? Did the kiowa invent anything? Do all living things that die become fossils? Where did the lepechaun come from? How would present day animals and rocks on different continents compare since the continents have been separated for a long time? Who is the protagonist in the jungle book? What tools do wainwrights use? Who is potraculus? How did animals effect people during the Stone Age? How do you use mammoth in a sentence? Why did humans kill the mammoths? What kind of life was in the carboniferous era?

Why was the transition to agriculture was a slow process for the paleolithic era?