But they are doing it. So things like flexibility must be important. If it was a small number of people we could expect that they might be making some kind of i

But they are doing it. So things like flexibility must be important. If it was a small number of people we could expect that they might be making some kind of irrational decision. If it's thousands and thousands of people then it's likely an indication that it's the best possible option for people in that situation.