Not all of us have that kind of money, I imagine a lot of the others (like myself) have both themselves and their significant other going through college at this point.

Also, why would it be stupid for the one you love to buy you something that would make you happy? That's like saying men are stupid for buying women a shiny rock someone found on the ground and put it on a shiny metal loop, or buying you flowers as they all serve no practical purpose.