IT support service is essential for you

A lot of people don't feel your IT infrastructure is essential for your job. That is not worth to spend on IT support service. They may say the business was running as usual in the time without computers.
However, imagine one day, your computer is out of order. You cannot use words and email. Maybe, your financial data is lost. Yes, you may get all important data from your paper based archive. You can use typewriters for writing letters to your clients. You can call your clients via phone lines instead of emails. You can go back to use paper and pen for tasks which used to be done by computers.
Well, in this scenario, you need to spend months for converting everything back paper based system. In addition, the paper based system is running less efficiency than computerized system.  This can cost hundreds times more than IT support service!