Our concerns changes with our age, gathering data from billions of searches leading tech giant Google has prototyped an anonymous profile of its users which it utilizes to autocomplete search queries so users have to type as little as possible. This autocomplete data also reflects the greatest fears, inquiries, preoccupations, obsessions and fixations of the human being at a certain age and our evolution through life.
Interestingly, as visible from the video made by Marius B. searching through top "I'm [age] and" queries for various ages, most of the results are sex related whether it be pregnant, never have been kissed, being a virgin, having a baby too late and so on. Do watch the video showing humans deepest queries via the all seeing eye of the Internet - Google.