The environment of Mars is much worse than that of the Earth. Why did you immigrate to Mars?

The earth is the cradle of human beings, but human beings can't just stay on the earth forever. With the population explosion and the economic development of various countries, the consumption of resources is getting faster and faster, and the earth's resources are limited, which is becoming more and more unbearable. We must plan ahead and find another way out as soon as possible. After all, space research is extremely time-consuming and expensive. Moreover, as the sun gradually expands, the temperature of the earth will rise, making it uninhabitable and becoming another Venus, and the water will evaporate, making it difficult for animals and plants to survive. After hundreds of millions of years, Mercury and Venus will be swallowed up gradually, and the earth will be doomed. Therefore, human beings should emigrate to other planets as soon as possible. Since you want to emigrate to another planet, you should give priority to the easiest. Mercury and Venus are too close to the sun, and the temperature and pressure are too high, so they are not suitable for human habitation at all. Other planets are either too far away or lack land, and the gravity is too small or too big. There are often sulfuric acid rain and lightning storms, and the environment is very bad. Mars is the most similar planet to the Earth in the solar system and the closest one to the Earth. At least it has an atmosphere, the temperature is closest to the earth, the temperature difference is not so big, it has a solid ground, extremely rich resources, and there are ice sheets at both poles, so it has the potential to become another earth. Although the present environment of Mars is very bad, it is already the best choice in the solar system, and these difficulties are not absolutely insurmountable. If human beings are willing to invest huge manpower and material resources and there are so many scientists and engineers, there are many solutions. It will take 300 years to transform Mars and finally make it a livable planet.