There are ups and downs to having a neighbor, especially one you share a fence with. Some ups are that they could be really cool and become your friend. Or they are just thoughtful and help maintain the shared area. Plus, it's just nice to know there is a person near by in case of emergencies. The downs are now you have to get along with a stranger. So what if you two don't click ? What if they turn out to be en entitled Karen? Or worse, what if they disrespect your land and those residing on i…