When it comes to using a shared computer, there are important considerations to think about in terms of programs that users can access. Naturally, you don’t want everybody to have Administrator privileges because any user could affect settings. If there are kids using the PC, this could turn out to be a sticky situation. Some users may only need certain programs and you probably don’t want them to have access to everything. There are many different circumstances when user account control is a smart move. A family PC is one instance. You don’t want the wrong people accessing the wrong information, particularly if it is personal in nature. Small business PCs are another story. Access needs to be restricted for some users.