The developer behidn the iOS 5 jailbreak wants Apple to open up iOS for mods, tweaks, themes, etc.
Help support them!
What sort of mods \ tweaks would someone want that would be worth having Apple "open" their mobile OS?
how long before they block your upgrade path
Or you could use android and not have to worry about that.
Yes and that'll be anyone's preference of what mobile OS they like.
I really don't understand where people get the notion that they deserve to have access to the code behind a companies flagship product, perhaps spoiled by opensource projects? If you want opensource, use \ develop for an opensource platform.