There are countless number of things to do in life, countless activities, countless fields to explore. What’s interesting is that within any particular thing, no matter how small it seems, you can go infinitely deep, explore & grow in it infinitely. Be it a game like Age of Empires, or a relationship, or fitness, or computer science, or being the richest person, each of these things has infinite growth & depth to offer, and once you get into that zone, you can end up spending an infinite amount of time enjoyably.

Life is like a Real Number line filled with various activities, fields, interests, aspects, laid out as intervals on it. Even if the interval is small like [0, 1], there still are infinite numbers between 0 and 1.