Pros & Cons of Jailbreaking your iPhone?

Ok, so I have an iPhone 4 and I would just like to know the good and bad things about jailbreaking an iPhone.

If you've already jailbroken your iPhone, would you suggest it for other people or not? Have you had any major bugs harm your phone, or is it pretty safe to jailbreak?
Will my phone still work the same? What are the risks? Etc. Just basically all I need to know about jailbreaking, thanks!

Cons:
Warranty will be voided
Cell service might be terminated
Phone will be super slow
Pros:
Free apps that were from the appstore
Access to alot of unheard apps that probably never existed in the appstore
The ability to use emulators

  • What are the pros and cons of jailbreaking my iPhone? I'm planning to jailbreak my iPhone 4S, which has the latest iOS version, and just wanted to know the side effects of it.
  • What are the pros and cons of jailbreaking an iphone 4s? I would like to jailbreak my phone for cool settings and effects. So what are te pros and cons? Also how do I jailbreak my phone?
  • What are the pros and cons of jailbreaking an iPhone 4? I'm contemplating jailbreaking my iPhone 4 (NOT the 4S). I just would like a pros and cons list. Also, what is the best program to use in order to carry out the jailbreaking? Its on version 6.0.1.
  • Pros/Cons of jailbreaking my iphone 4s? I have the latest version of iOS 6, I've never jailbroken anything before. I've read how to do it, but I'm still kinda scared that something will go wrong and I'll have to get a new phone. I read somewhere that I should restore it before jailbreaking it? I really don't want to do that. Will jailbreaking it erase my pictures/texts? Is the stuff on Cydia free?