Personally I've found the reasons to jailbreak have decreased more and more over time. A perfect example for me is Control Center replacing what I used SBSettings for.
And yet Pingit is still in the app store. https://itunes.apple.com/gb/app/barclays-pingit/id496552142
Case in point: When I plug my iPhone 5 into my car's USB port, the Music app's display changes to an "Accessory Connected" splash screen. I can only control my music through my car's awful dashboard interface. Jailbreaking allows me to disable that splash screen.
Other things like 5 column springboard/dock, FakeClockUp (reduce or speed up slow animations), and BiteSMS (Messages app replacement that can be used on the lock screen), are just minor interface and functionality tweaks that, together, make my jailbroken iOS6 a far superior UX than iOS7.