Final answer:
The specific percentage of adults in the US who will become parents is not detailed in the information provided. The information, however, shows a changing family landscape with single-parent and non-traditional family situations becoming more common and indicates that various factors influence the decision to become parents.
Step-by-step explanation:
The percentage of adults in the US who will eventually become parents is not explicitly detailed in the provided information. However, it is noted that family structures in the US are evolving. The traditional family model, where married parents live with their unmarried children, is becoming less typical. There is a rise in single-parent households, unmarried couples, and same-sex couples raising children, as well as extended family members living together. As of 2017, 32 percent of children lived with a single parent only. Additionally, with changing perspectives and living arrangements, fewer men are found living in a household with their own children than in previous generations.
It is apparent that there are increasing options and configurations of what defines a family in today's society. With women having children later in life, and various methods such as adoption and surrogacy becoming more prevalent, the choice to become parents is influenced by a wide range of social and economic factors. Therefore, while an exact percentage of adults who will become parents cannot be provided from this data, we can conclude that parenthood continues to be a significant aspect of many adults' lives in the US, albeit in various forms.