Don't let yourself be bullied into capitalism. It's fine to do things for free if that is what you want to do. It's fine to ask for favors without immediately offering anything in exchange. It's fine to spend resources on your hobbies, even if they don't give you any tangible benefits. You are not naive, stupid or infantile when you try to keep money out of as much of your life as you can. Surround yourself with friends you trust, so that you don't have to do everything as transactions.