Simple, compact, attractive and effective.  Lifestyle systems may not have all the features of a separate component system but they are designed to make buying easier with everything you need in one box.  They take up minimal space, do not look out of place with the simplest modern decor and the speakers are also compact and attractive.  The speakers can often be placed on stands, on the wall or off the ceiling.  Best of all a single remote control will operate and automate the system.