OpenAI CEO Sam Altman explains how users interact with ChatGPT based on age demographics.Older individuals use ChatGPT as a Google replacement, while those in their 20s and 30s see it as a life advisor.Altman notes that college students treat ChatGPT like an operating system and rely on it for making life decisions.ChatGPT is increasingly being used for various purposes like giving advice on hobbies and helping with decision-making across different topics.