The line comes from Avengers: Infinity War, released in 2018, where Thanos speaks it as he pursues the Infinity Stones and justifies the sacrifices he believes are necessary. The quote quickly moved beyond the film into short-form edits, reaction videos and motivational montages, where creators reuse it whenever a decision carries a heavy cost. Its staying power comes from its simplicity: in one sentence it frames any difficult choice as a test of resolve, making it easy to drop into gaming, sports and everyday dilemma clips.