I doubt that it is the only reason, but I can tell you that it is the dominant force also outside the United States. I could not think of a better example for "

I doubt that it is the only reason, but I can tell you that it is the dominant force also outside the United States. I could not think of a better example for "perfection is the enemy of good" than tax systems. Just throw it all out and call it good enough. If you really need deductions for expenses, found a business. For persons, expenses are indistinguishable from consumption.