People who would blindly install software on their 300$+ piece of electronics that happens to carry personal/sensitive data deserve what happens to them should their privacy ever be invaded. As with most things in life, if you know what you're doing, you have nothing to worry about.
That aside, i was one of those who NEVER wanted to jailbreak. I loved my iPhone when i got it, never had problems, tons of apps, excellent performance....very reliable. As time went on, i simply just...got bored with stock. I just like tinkering around with computers and such so it was probably inevitable that i just did it for kicks anyways. And after doing weeks, yes, WEEKS of research on everything that had to do with jailbreaking, i took the dive cause i figured, if i mess it up, what would i lose by restoring and then restoring my backup that i made right before my jailbreak attempt?
Some of these apps that offer a little more functionality to my phone are extremely important to my personal taste, as is having complete access to my phone. Yes, there is a little, and i repeat, a LITTLE more lag, but it's so negligible that i don't even notice it (and neither do my friends who are on stock). It's really hard to explain and try to convey what being jailbroken means to someone who isn't jailbroken...i know, cause i didn't want to jailbreak in the first place. You simply have to try it for yourself, and just try some of the apps that people here have talked about and form your own conclusions then. But i totally understand and respect those that would never want to jailbreak
As for me, i personally could never go back to stock.
KrayzieKray 
