People enjoy trees on their property for the natural beauty, the privacy they give, the habitat for wildlife, and, in some cases, their value as merchantable timber.
Neighbours often dislike trees because they block the sunlight or the view.
Sometimes the cutting of the trees is a mistake. Because so much emotion is attached to trees and their removal there is plenty of case law regarding damages for missing trees. The first thing you would want on finding that your trees have been removed is to have them replaced as nearly as possible. Your claim for damages for restoration would probably not be upheld because it is unreasonable. Mr. Hall removed thirteen 40 foot trees from the Kates' property while they were away in order to gain more sunlight in his backyard.