Originally posted by: Chriscross3234
Steam is basically a gaming client that allows you to purchase, download, and play games. The biggest reason for using steam is for pure convenience sake. No install process, no managing discs, automatic updating/patching. Steam also provides a community system with friends and gaming groups. Steam doesn't make your games faster by any means, it just provides you with a way of playing your games. Unless you like owning the physical copy of games, there is no reason not to use it.