Oh Heavens, definitely do not feel bad about not wanting to work at McDonald's. Both my mother and sister have, and just recently, because just like you "the family needed money". Oh well. They both complained and within a month both quit. Now my mother works night shifts at a plastic factory and a job during the day, my sister is unemployed, and i myself have three jobs.
So never feel bad about hating doing something you are coerced into. Do what makes you happy. (: