If you come from a family that is anything less than "well off", there is a strong instinct for security. When you know how bad the alternative is, you play it conservative and plan for the future. If your choices are a job at Microsoft where you'll start at a level of compensation that's quite possibly higher than any ever earned by any of your family at any point in their careers and likely climb to senior or principal where you'll make more money in a year than most members of your family will ever have as a net worth or to throw away that essentially guaranteed income for the chance that you could do something else? You take the sure thing.