I can give you plenty of reasons for jailbreaking:..
Thank you, AC. Finally, someone who actually knows something about the issue takes the time to respond.
As for most of the rest of you...
I've been jailbreaking my iPhones for years. Why? Simple aesthetic reasons, for the most part, and a few minor enhancements for keyboard layout, select/copy/paste routines, and minor, but very useful tweaks of the Control Center, App Switcher, OneTouch ID, Notifications, etc. Not to mention "hiding" some of the bullshit cruft "apps" that clutter up my situation.
Apple, as usual, decides how the device will look and feel, and allows almost no "real" customization of the iPhone desktop, navigation, power switching (On/Off/Restart/Springboard relaunch), etc.
I want... check that, demand... a transparent Dock, unlimited nested folders without that hideous gray background blur, no resource-killing "animations," no auto-redirect to "App Store," and a number of other personalized processes and "look and feel" adjustments that are ONLY available on the iOS to jailbroken hardware. Period.
If kids, or old farts, for that matter, want to jailbreak so they can avoid paying... what(?) 99 cents or two bucks for some apps, and they get burned using some obscure Chinese software repository, who gives a fuck? I don't.
I don't like my homescreen being cluttered up with icons. If Jonny Ive thinks that's cool, and Apple agrees to the point of not allowing the simplest, safe mods, well fuck him and them too. Once I buy the phone (outright, no subsidy), that bitch is mine.
Pardon my french, you know, but it's bad enough we have to wade through all the fucking horseshit that does, indeed, exist in the JB "community," without having to listen to misinformed luddites, and chickenshits posturing about how bad it all is or how these "kids" you all speak of, get what you think they "deserve." If you're getting ready to chime in on moralistic bullshit, about a simple issue of choice, well then, fuck you, too, in advance.
I feel better. Oh, and by the way, almost all of the serious root-level exploits that Apple has "patched," now, for years, have come courtesy of the JB underground. You're welcome... assholes.