The government's alleged denial of extraterrestrial existence and activities largely stems from the lack of concrete evidence and the potential societal and cultural implications of such a revelation. Governments prioritize maintaining stability and order within their jurisdictions, and acknowledging alien presence could challenge established beliefs, potentially leading to widespread societal upheaval and panic. Additionally, the disclosure of alien existence could have national security and international relations ramifications, as countries might view it as a threat or opportunity for technological advancement. Therefore, governments often remain tight-lipped about extraterrestrial matters, citing the need for further scientific research and evidence before making any official statements.