What do you think of emigrating to Mars?

Compared with moving to the moon, the advantages of moving to Mars are that Mars is bigger and heavier, and the atmosphere is thin, and the daily temperature difference on the surface is smaller. The disadvantage is almost only because of the distance, and it is far more than a hundred times. But the mass of Mars is still too small. There was a considerable amount of water on Mars billions of years ago, but Mars did not have enough gravity to keep the atmosphere and water for a long time, so it was difficult to keep the temperature and block radiation.