Evolution is the unifying concept underlying all of biology. Finding and testing evolutionary explanations may be difficult, but not looking for such explanations is akin to saying to someone speculating about why, say, some wooden structures are stronger than others, that "I find these explanations of physical effects in terms of gravity and electromagnetism very unconvincing". Wood is a complex material, so understanding its properties is difficult. But if your explanation of wood's properties is incompatible with fundamental physics then there's something wrong with it.
Similarly, explanations of aging that amount to "the body just for no reason fails to do something that it easily could even though it's obviously beneficial" are pretty much like explanations of physical processes that violate conservation of mass/energy. There had better be some possible evolutionary explanation, since otherwise it's very likely that the result is due to some experimental error.
Similarly, explanations of aging that amount to "the body just for no reason fails to do something that it easily could even though it's obviously beneficial" are pretty much like explanations of physical processes that violate conservation of mass/energy. There had better be some possible evolutionary explanation, since otherwise it's very likely that the result is due to some experimental error.