There are examples which cannot be done free as far as I know. For example, I love to go paintballing. To make it cost less, you can buy your own paint and own your own equipment. But it still costs money because I don't own a giant plot of land or have 100 friends with their own gear. Then I have to buy the paint itself on top of that. Can you find me a non-paid version that matches that experience?
I suspect most people go out to have fun. What is fun? Meeting people and creating experiences/memories. Sure, you could sit with your friends at someone's home every night but that gets boring honestly and turns into the same people and patterns.
I suspect most people go out to have fun. What is fun? Meeting people and creating experiences/memories. Sure, you could sit with your friends at someone's home every night but that gets boring honestly and turns into the same people and patterns.