This isn't entirely true. Adaptations are better if they help some offspring survive and reproduce during some window of time. For example, if I drop dead at

This isn't entirely true. Adaptations are better if they help some offspring survive and reproduce during some window of time. For example, if I drop dead at 30 there's less of a chance that I can help protect/guide my offspring. If I live past 30 their chances of survival (and reproduction) increase.