Do we need to reduce the human population in order to solve our problems?

Question from the Internet:

“How important is it to reduce the human population? Could it be done in an ethical and morally correct way?”

1. Is the human population truly the problem? Or perhaps our “footprint” as a result of excessive overconsumption, as a result of crazy energy demand is a bigger problem? Can it be that if we returned to a Natural lifestyle, staying within the optimal parameters of true, modern, comfortable natural necessities and available resources we could service even more people?
2. How do we know what is the optimal population of humanity” How can we know what our true necessities and the truly available resources are? Do we have any actual truthful standards or measurements? Or perhaps everything we determine, base our decisions on is arbitrary, out of thin air, according to our 100% subjective, egocentric calculations?
3. We can’t even start to discuss these things before we acquire a complete, “insider” knowledge, understanding of how Nature works, and what laws, cause and effect processes govern our lives. And in order to do so, we would need to adapt ourselves to Nature, and seamlessly integrate into Nature’s system.
4. This is possible only above and against our inherently self-serving, self-justifying, egocentric and individualistic “software” that drives us towards excessive overconsumption, accumulation of resources and profit for ourselves while we ruthlessly compete and succeed at each other’s and Nature’s expense.
5. Before we willingly, purposefully and consciously change ourselves and start mutually integrating between us so through the achieved similarity we could integrate into Nature’s system and start feeling, attaining it from within, we will just continue our wanton destruction of each other and Nature — based on our empty, misguided ideologies, sciences and philosophies.