There are many reasons to prune your trees, but the essential message is that it keeps them healthy! Removing dead, competing, decaying or diseased limbs and will greatly benefit the longevity of your tree. If these remain on the tree they can become a magnet for other diseases and insects that will establish in the dead branches and spread into the rest of the canopy. Pruning can also benefit your view, or keep branches away from your building or driveway.