Why buy an iPad if you're not going to jailbreak? Apple iDevices are just terrible without the freedom that jailbreaking brings
I had a old bootrom jailbroken iPhone 3GS and barring some font size options which were extremely useful but now included as standard, never consistently used much beyond SBSettings and five icon dock. Sure, I toyed with winterboard and lockinfo and several others, but none of them held my attention and several of them made springboard crash and dumped me into safe mode at regular intervals. Easy to get out of with a respring, sure, but not so good if you want to make a phone call right then.
If someone can fill Comex's boots and produce another userland jailbreak then I'd consider that, but all this pwnagetool/redsn0w nonsense hasn't proved itself worthy of my time. All my iDevices are unlocked too so there's not even that.
An iPad is a perfectly functional tool, thanks - there's about 100 apps on mine including Pages, Numbers, various Astronomy tools like Redshift, several games, utilities and so forth. Most of the time I'll admit I just use it for mail and web (indeed I rarely use anything else now for email because the iPad has all my accounts accessible in a way that's far more useful than on any other device I have).
I guess I just don't get why some people feel they have to smash out of the sandbox in some rebellious act of vengeance before they feel their device has any use to them.
PS - If I still had the 3GS, it'd probably still be jailbroken. Sadly, I don't. Still, the insurance paid half the cost of the 4S.