Me ( the poster) is right why spend billions of $ that should be used for our economy not some other settlement on mars that has a large chance of failure

And since its one way it's a big decision. Stay on your home planet that is highly in danger or go to a whole different that will take years to adjust to and has a chance of failing

Is there a reason why you have to be 18 to go

Why spend billons of dollars if it fails? its just a waste of money