Sex and Death's Relationship (Spiritual) (9.11)

I study astrology sometimes. In the beginning, I learned that my 8th house (at birth) has 3 powerful planets in it. So, I studied it deeper to learn that the 8th house is tied to themes like sex and death (as well taxes, debt, shared resources, intimacy in close relationships, etc.) I wondered how they could all be related, particularly sex and death. I looked deep within about it and came to these thoughts. Have a super start to 2020.