why can't all people of the planet be rich?

Because, wealth is not equally distributed. It's just concentrated more in some places and less in some places. The high concentration is because of greediness which makes such people to go no accumulate money. They just don't understand the following: You can eat only until your stomach permits even if you have millions of dishes cooked by hundreds of cooks. Same way you may earn crores and crores of money and deposit millions of dollars in world banks. But you can only use the money if it's necessary. Why do you lock that money in your bank accounts for generations and generations without being used?

It doesnt matter if you are rich.Believe some poor people are more happy then the rich When you are rich you are stressed thinking you will loose your money,someone will kill you for money etc.... but at the same time a poor guy would just wake up everday and go to work ,earn some money consume it at the same time and without any stress will go to sleep. In this world you'll stay unhappy evn if you are rich or poor,till youll learn how to help others

because people are greedy and everyone always wants more than wat they have. I have little money but i dont consider myself poor as i have the basics my arms legs clothes a place to live.In my eyes im rich because i have more than others. I think it depends on everyones views.If everyone appreciated what they had and werent greedy they would realise they are rich.