So achieving what you want to achieve is fake happiness? From everything I've seen, humans do experience real happiness when they accomplish something, such as winning a game of MCSG, or scoring a goal in a sport. Though it does seem different from the happiness you get from eating your favorite food. I'm trying to understand the difference.
Also, true happiness is a real thing. I don't think you can argue that there aren't truly happy and satisfied people in the world. There are people who are genuinely content with practically everything in their lives.
Wait, what's your point? We have important discussions about immaterial things all the time, and we just had one in this thread. You can't live life without talking about immaterial things such as laws, emotions, motives, hypothetical scenarios, etc... Would you rather talk about chemistry? This is a philosophical thread.