Most often, trees are pruned for ‘people reasons.’ The trees were just fine before man developed the saw and began cutting them.
Topping trees with a central leader permanently changes their appearance and the trees will require maintenance
Improve aesthetics by reducing stray points or uneven growth
Even out trees that lean toward the sunlight by trimming back the sunny side
Selectively removing lower branches to provide greater clearance beneath the tree
Raising the Canopy
Trees without a central leader can be “topped” by shortening the branches and stems