So I read that 7 million some devices were JB'd in 4 days.. So clearly quite a few do not agree with you.
Evasi0n Is The Most Popular Jailbreak Ever: Nearly Seven Million iOS Devices Hacked In Four Days
I just did my ipad3 yesterday - and found quite a few things that really should just be part of the OS.. But in general I hate the whole idea of a walled garden, it fine for the masses to keep issues smaller. And sure make it the default config, but like with the kindle fire - make it a simple toggle in the settings and now I can install apps from other sources, etc.
Couple things I installed because they should just be part of the normal config. ifile - not having access to the file system is nonsense. Even if never used, telling me I am too stupid to access the file system just ticks me off
First thing I installed was wifi analyzer -- the info provided is just too useful in troubleshooting wireless issues. Why would you remove the ability to see the channels and strength of the SSIDs your box sees. What encryption its using, etc.. These are all things that make it easier to troubleshoot why you can not connect. Same goes for common networking tools like ping traceroute tcpdump, etc. All things I installed via the jb..
Now does billy need these? Maybe not -- but everyone is not billy.
Couple of other things I installed - ability to change how many icons on the screen, increased my dock to 8 icons, etc. Why is something like that just not native feature? Why can I not put an extra column on each page, why can I not change the size of the icons? Just basic common stuff..
Other option - change my default browser, really how is that not native that I can choose which browser opens a link!! As to adblock - I use mercury browser which has as native feature. So since I can not easy click links and have it open in mercury I don't care if safari has it or not.. Not a browser going to use for browsing.