Jailbreaking will allow you to find the idiots who are close minded and can only see one thing because their limited intellect doesn't allow them to see anythign else.
Realistically, it let's you do things with yoru hardware that you can't do otherwise. You know what jailbreaking an iPhone, or rooting and Android device does? It's more or less the same thing. Let's you have more control over what you bought. I do hear that you can't get on PSN, so there is that effect, and I'm sure youccan't just call up Sony and ask them for repairs too because they are like little children about this issue.
If I am not mistaken, the US ruled that having a jailbroken iPhone is perfectly legal (because Apple wanted to make it illegal), so I am interested how that works for the PS3 as well.
Tag(thx fkusumot) - "Yet again I completely fail to see your point..."
HD vs Wii, PC vs HD: http://www.vgchartz.com/forum/thread.php?id=93374
Why Regenerating Health is a crap game mechanic: http://gamrconnect.vgchartz.com/post.php?id=3986420
gamrReview's broken review scores: http://gamrconnect.vgchartz.com/post.php?id=4170835