Why do aliens come to earth?

Please don't scare people, it is impossible for aliens to come to earth!

The reason is that although it is generally believed that there will be aliens in the universe, modern astronomical observation has ruled out the possibility of aliens in the solar system. For us humans or other intelligent creatures, it is an unconquerable distance to enter interstellar space in light years! Therefore, the huge spatial distance seems to be an insurmountable obstacle to the interconnection between intelligent creatures, so even if there are aliens, it is difficult for us to find them and don't know where they live. So we know nothing about the living conditions of aliens, let alone whether their technology is more advanced than ours? . You can imagine that even the speed of light of 300,000 kilometers per second will run for years, decades, hundreds of millions, tens of millions of years or even longer! What an unimaginable distance it is! So it is impossible for aliens to visit or invade the earth, or even kidnap people who control the earth! Limited by the laws of physics, I find it hard to believe that intelligent creatures can make spacecraft fly at the speed of light. These are all scientific fantasies. How can it be so easy? Therefore, it is not credible. To take a step back, even if intelligent creatures have the ability to make super spacecraft fly at the speed of light or faster than light, it is impossible to come and go freely in the vast interstellar space in light years. For this reason, I pessimistically believe that human beings may only exist alone in the universe forever!

It can be said that so far there is no real and credible evidence that aliens have visited our earth, and all the rumors about aliens visiting the earth are not credible. So, I can tell you for sure: no one can see aliens with their own eyes. The appearance of aliens is imaginary and has no scientific basis. What do real aliens look like? Is it that ugly? It may always be a mystery to us.