Why does passengers need to wait for a long time to board the plane?

Passengers often experience long wait times to board a plane due to a combination of factors, including the need for thorough security checks, the boarding process itself, and potential delays in the aircraft's readiness. Additionally, airlines typically board passengers in groups or zones to ensure an orderly process, which can also contribute to longer wait times. Weather conditions and air traffic control delays can further exacerbate the situation, causing additional waiting periods.