People living in the far north type of places suffer significant suicide and drinking problems, when compared to typical people from other places because of the dark.
Mental health living in Mars is going to be a killer, life there is worse than living in a isolated prison. Try living in your home without any human contact or fresh air, and now imagine doing that for the rest of your life.
Lastly, money is not unlimited. The cost of a launch today is already tens of billions, the ISS cost hundreds of Billions. The cost of a mars base will be Trillions. Not sure why you think this is trivial consideration. If the US wont give free healthcare to its citizens who actually are productive and pay taxes, why would it spend an equivalent amount for a man or woman or a few of them to grow potatoes on Mars ?
In big cities there are a lot of people who, at least for a big part of the year, spend all their lives only inside their home apartment and inside their work office.
If someone had been willing to spend many times more money on a base in Antarctica, it could have been built to have a much greater interior space and with much more comfortable facilities, so that for the people living inside it there would not have been significant differences between living there and living in some big city of the Earth, especially now, when with modern communications they can speak face-to-face with anyone else on the Earth, at any time.