The author suggests a long-term investment strategy based on demographic shifts, identifying Grindr, Match Group (Hinge, Tinder), Bumble, and Lululemon as primary beneficiaries. For second-order effects, the author recommends going long on pet care via Chewy, Trupanion, Zoetis, Idexx, and Freshpet, as well as travel and fitness through Royal Caribbean, Norwegian, Marriott, Hilton, Booking, Airbnb, Life Time, and Planet Fitness. Conversely, the author suggests shorting child-centric and suburban assets including Mattel, Hasbro, Carter's, Children's Place, Kimberly-Clark, P&G, Lennar, and D.R. Horton, while highlighting Progyny and Hamilton Thorne as growth bets in the fertility sector.