Hi Ken S. Good afternoon. All those who love Yahweh can live the Kingdom way of life on this earth by keeping the heaven-sent-Laws, the Biblical Laws, the same of which will be kept in the Kingdom. However ultimately, although mankind feels it can produce it's own solutions to the world's problems, it cannot. Without Yahshua's direction and rule, this world is destined to repeat the same mistakes. Yahweh could raise up righteous leaders, but ultimately, they will die and the people will return back to a life of sin. Such is a lesson found in the Book of Judges. That's why only an eternal ruler with heavenly wisdom will do as the ruler of this earth.
Many times when mankind comes up with their own solutions, and try to achieve an idea of 'peace' on earth, they come up with sets of rules which do not reach Yahweh's high standards of morality. As a result, man will never eradicate suffering. People will always suffer where Yahweh's Law is not being observed. In the Hebrew Scriptures we read of the Tower of Babel that was a huge project for a unified earth, all of which spoke the same language. However, that project was cursed by Yahweh because instead of looking to Yahweh for guidance and direction, they sought to provide for themselves the answer to a potential problem. Why didn't they turn to Yahweh in prayers and ask Him to guide them? Further, they looked to Nimrod as their leader, when Nimrod was not a righteous person. They violated the first of the ten commandments.
When Yahshua returns to this earth, He will be able to enforce the Laws of Yahweh on this earth and none will be able to withstand the power of Yahshua. Many see the Law as a burden, but this is people who don't know Yahweh. Keeping the Law proves that it is not a burden, but a delight. The Kingdom of Yahweh we learn in the Bible will be a earth and heaven renewed. "17 For, behold, I create new heavens and a new earth; and the former things shall not be remembered, nor come into mind." No more pollution. No more diseases. Rain water will be good to drink. You'll be able to quench your thirst in the rivers. The earth will be incredibly productive also. Amos 9:13-14 " Behold, the days come, saith Yahweh, that the plowman shall overtake the reaper, and the treader of grapes him that soweth seed; and the mountains shall drop sweet wine, and all the hills shall melt. 14 And I will bring back the captivity of my people Israel, and they shall build the waste cities, and inhabit them; and they shall plant vineyards, and drink the wine thereof; they shall also make gardens, and eat the fruit of them." and "4 Thus saith Yahweh of hosts: There shall yet old men and old women dwell in the streets of Jerusalem, every man with his staff in his hand for very age. 5 And the streets of the city shall be full of boys and girls playing in the streets thereof. 6 Thus saith Yahweh of hosts: If it be marvellous in the eyes of the remnant of this people in those days, should it also be marvellous in mine eyes? saith Yahweh of hosts."
Further, we know the nature of animals will be changed. You see this sometimes with ferocious animals like bears, tigers or lions sometimes befriending a human being, or another animal like a dog if they grew up with that person or animal from a young age. The animals will have an added knowledge of Yahweh and they won't harm other beings (Isaiah 65:24-25).
I compare this world to 2 Kings 4:39-41. There is death in the pot of this world. There is suffering and evil. But if we turn to Yahweh and accept His Law, taking of His meal, we will be cured of the death that is so evident in the world. Further, Satan the Adversary is real and is causing a lot of problems in the world, trying to get people to sin and transgress Yahweh's Laws. Until Satan is destroyed, we cannot expect to have peace in this world. However, in our own little world, within our families, our lives, we can live the Kingdom way of life now by keeping His Laws, living as if Yahshua were already on this earth ruling. This is what Yahweh desires. When Yahshua returns, those already living the kingdom way of life, those who have overcome in this life, will be well-adjusted and well-prepared for life in the Kingdom of Yahweh.