What are the pros and cons for computer games

I'm a computing gamer, and games are awsome. Apart from being addictive, and lack of physical activity (excludes hands and brain), computer games can (if not cheepo games) give history lessons, (example Age of empires, Medieval total war). Also they are great for strategic planing (sstratergy games) and hand-eye-brain co-ordination. Also the keep the kids out of your hair.