Final answer:
The hardest thing to get used to when leaving a Paleolithic community for a Neolithic one would be the transition from nomadic hunting and gathering to settled farming.
Step-by-step explanation:
The hardest thing to get used to when leaving a community that lived a Paleolithic lifestyle to join a Neolithic one would likely be a transition from nomadic hunting and gathering to settled farming. In a Paleolithic society, people relied on hunting, gathering, and moving from place to place to find food. However, in a Neolithic society, people started to settle in one place and cultivate crops for food.
Adjusting to a more complex social structure and adapting to new tools and technologies would also present challenges, but the change in subsistence strategy would have the most significant impact on everyday life.