Most people do not realize that a tree can be ruined by stripping it out and leaving it heavy at the ends.
This photo below shows heavy ends and no lower limbs left.
These pine trees (below) were trimmed along Encinitas Blvd. (a major road way in San Diego County), Their canopies are stripped out from the inside. The lower limbs were cut off. The privacy and screening from the busy road is lost for ever as Pines can not regenerate lower limbs.