Step-by-step explanation:
In the context of the scene in "The Princess Bride," Westley's statement "Life is pain...anyone who says differently is trying to sell you something" is a reflection of his own experience and perspective as the Dread Pirate Roberts. He has endured significant physical pain and emotional trauma throughout his life, and as a result, he sees life as inherently painful.
However, while it is true that life can be difficult and painful at times, it is important to recognize that it is not only pain. Life can also be filled with joy, love, and other positive experiences. Westley's statement can be seen as a reflection of his own worldview and experiences, rather than a universal truth.
Moreover, it is possible that Westley's statement is also a reflection of his own bitterness and cynicism. Having faced so much pain and suffering, he may be unable or unwilling to see the beauty and goodness in life. It is important to recognize that everyone's experience of life is different, and that while pain and suffering are an inevitable part of the human experience, they are not the only part.
Therefore, while Westley's statement may ring true for him and his experiences, it is not necessarily an accurate representation of life as a whole.