>>12472073The term biological need is not restricted to processes that only sustain organisms. It is also extended to processes that are necessary for the successful propagation of a species. In this case, processes that are evolutionary necessities.
In evolutionary biology, premature death and not breeding have the same result. They're equivalent. Failure to breed can be equated with the failure to sustain oneself. Therefore, from a theoretical point of you, the lack or inability to breed is in fact equal to the inability to breathe or eat because both inabilities will cause the animal to not breed.
