Any time you install a program on your computer, you have to continually upgrade the software to get the latest program improvements.  And in order to get these improvements, it's likely that you have to pay for a maintenance contract, otherwise you're stuck with the features that the program had when you purchased it.  Rather than paying once for the program and then paying again for maintenance, we give you everything that you need for one flat monthly fee.  No more worries about getting a computer virus because your program is out-of-date, or losing out on the latest program features because you don't want to pay the high costs of a maintenance contract.