I disagree. While learning to operate a grill or deep fryer isn't a skill many are likely to need in the future there are dozens of generalist skills learned from your first job. Think teamwork, following managerial directions, following a roster, how to complete timesheets, how to deal with workplace conflict, how to deal with suppliers and customers, how to dress appropriatly, even how to count money/operate a register. Fast food jobs are a great place to make mistakes as a teen as the consequences are minimal and you can get another job easily. If you've never worked in any workplace you'll find it far harder to get hired.