Tesla CEO Elon Musk posted a tweet in which he said that he is a rare exception as a rich person who has fathered several kids as most rich people he knows have zero or one kid.

“Contrary to what many think, the richer someone is, the fewer kids they have. I am a rare exception,” Musk said in a tweet.  The post has garnered more than 1.2 lakh likes on Twitter since being shared on Tuesday.

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Musk pointed out how the “US birth rate has been below min sustainable levels for 50 years.”  He shared a graph of birth rate levels, which revealed that the overall fertility rate in the US has already reached close to 1.5. The fertility rate predicts how many children a woman will have.

The SpaceX chief had said that the narrative that more people are choosing not to have kids because it is harmful to the environment is “total nonsense”.

The billionaire also commented on a video of him declaring that the biggest issue in the next 20 years would be population collapse. He was joined by Chinese business magnate Jack Ma.

“Some people think that having fewer kids is better for the environment. Environment’s gonna be fine even if we doubled the population. I know a lot of environmental stuff… Japan had lowest birth rate. Having kids is essential for maintaining civilization. We can’t let civilization dwindle into nothing,” said Musk.

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This is not the first time that Elon Musk has raised the issue of the declining population. Earlier, he had said if there are not enough people for Earth, then there will definitely be enough people for Mars.

“There are not enough people,” Musk had said at an event last year.  “I can’t emphasize this enough, there are not enough people,” he added.  

Currently Musk,  has seven children- twins Xavier and Griffin, triplets Kai, Saxon and Damina, X Æ A-Xii, and his youngest Y. He lost his firstborn son Nevada Alexander Musk died when he was 10 weeks old.