riddle me this?

I always see parents asking kids what they want. Do you want the green one or the yellow one? Do you want to go to the park or do you want to go to the zoo?  But then when they go into McDonald's, the kids always always want a different table and the parents never let them choose that.  Asking them whether they want to major in aeronautics or liberal arts is a little more expensive than asking them which table they want to sit at.  I think we've got it backwards.