Honestly... games are both bad and good (and this is coming from a 16 year old). Video games should only be played when all of one's work/tasks are complete and still have enough time to sleep for a good 6-8 hours. Plus, video games should be monitored... playing for more than 2 hours typically has no benefit ;)
These are some very basic things I know about video games, the list goes on and on but I can't think straight today:
Pros:
- Lets people get their stress out.
- Helps improve some coordination (i forgot the word for it)
- Can teach certain lessons (ironically, i learned quite a bit from playing Runescape)
Cons:
- Fries your brain
- Does increase one's anger (i have seen it with my own eyes by watching my brother play video games... whether it is battlefield or gran turismo)
- Makes you unhealthy