Pretty sure psychological tests done over the years say pleasure is the right answer here.
Though pain is usually the one that's cheaper and in higher supply so it's often the easier thing to do. Like JC said it's easy to shoot some dude in the knee caps but offering a pleasure equal to that isn't necessarily very easy-- "the best sex ever" probably isn't even gonna be equal there.
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No problem!
This is a cute and pop genocide of love!