For one, you don't seem to have any concept of our evolutionary biology. Humans have evolved to be goal-oriented, and we receive happiness for participating in activities that are beneficial to our long-term survival.
Second, you don't seem to understand the predatory nature of our economic system and social media. Modern "comforts" (consumerism) and tech are hijacking those endorphin pathways to make us "happy" while we rot. At the back of our minds we know this, and we try to stop it, but few are meaningfully able to and most spiral into depression and anxiety.
That sounds like something good to you? Naive visions of heaven where you spend eternity doing nothing are actually closer to hell than anything else - even a sloth would go insane after a few months. I can understand our ancestors trying to come up with an end-game that they knew would be unattainable, but you think they actually properly thought it through?
I don't think you've properly thought it through. Navel-gazing is a game for prisoners, not people living their lives.