The FBI concluded its investigation into the 2017 Las Vegas mass shooting by Stephen Paddock without identifying a clear, single motive for his actions. In January 2019, the FBI stated that there was "no single or clear motivating factor" for the attack, a sentiment that was echoed by the Las Vegas Metropolitan Police Department's findings. Despite extensive investigations, Paddock's motives remained elusive, as he took steps to ensure his thoughts and reasons were not easily discernible, even in his final act.
 

Various theories and speculations have emerged regarding Paddock's motivations. Some FBI documents released in 2023 hinted at potential resentment towards casinos due to how they treated high rollers like Paddock, but this was not established as the definitive reason. Other considerations included his deteriorating mental and physical health, financial losses, and a possible desire for a dramatic, controlled end to his life, perhaps influenced by his father's criminal notoriety. The FBI's Behavioral Analysis Unit suggested that Paddock might have been seeking infamy or to leave a legacy through a mass casualty event, but again, this was speculative.
 

Public and media discussions, including on platforms like X, continue to reflect skepticism about the official narrative, with some suggesting that the absence of a clear motive might indicate a cover-up or hidden motives. However, these theories lack concrete evidence and are not supported by official findings. The complexity of Paddock's personality and his deliberate secrecy have left the motive for the Las Vegas shooting as one of the most perplexing and debated aspects of this tragic event in modern American history.