Well, let me ask you this. Do you have a site that constantly requires updating and you often times find it that someone is trying to access your information without your approval? Do you need to always be able to connect to your folders without needing to pay a lot of money? If you answered yes to at least one of these questions it is quite obvious that you need a private proxy. Also, there are a couple of other reasons that can certainly be your situation, such as free technical support and the fastest possible connections.