Most people get used to that kind of work first, because it is easier or more comfortable and second because that is how we were educated, society is systematized in having its fifteenth and last one every month, it is easier to be an employee than a business owner. I am not saying that this is ideal, everyone has their own way of seeing life, there will be those who were not born to undertake others, but the ideal would be to have a second income in case the main one fails.