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Think of it this way, using the hip joint as an illustrative example. The example can be applied to any joint, for example vertebra, shoulder and knee.
The head of the femur has an approximate diameter, volume and surface area. It interfaces with the acetabulum of the pelvis. This is a "ball joint". The body weight carried by this joint results in stress in the bone and soft tissues including ligaments, cartilage, bursa and labrum. This is not medical science but rather high school physics.
The size of the aforementioned components does not vary too much, but weight carried, and the number of times (cycles) that weight is applied varies considerably among individuals.
Without belaboring the point, bodybuilding damages the body. It "wears out" the body faster than it would if the individual did not engage in such activities.
The speed or severity of "wear out" is varies among individuals. This means one individual can happily report "no problems here", while another may require multiple surgeries, pain medication and has greatly reduced function.
This is 100% identically analogous to a suspension ball joint. All else being equal, a car lightly driven with little payload will see its ball joints last longer (measured by time) compared to the same car driven more aggressively and with heavier internal payload.
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