These things are ugly and take up a lot of space. They do have their fans which claim they do not generate that much traffic relative to their size since, they don't have that many people working there. For example, if they were replaced with the same sized office buildings, they'd probably put more strain on the road infrastructure and so on. Also, some of the property taxes collected from DC operators supposedly go to lowering the property taxes of residents in the county.

https://www.loudoun.gov/FAQ.aspx?QID=1793

> said, noting the humming or buzzing noise the centre emits scares away a lot of wildlife from his area

I imagine trees and fields that have been cleared and the roads paved probably play a good part as well.