Right, my point being that it's should be up to the user to decide, because most of the times I run programs, I actually want them to be able to gobble up GB of disk, RAM and fully make use of my CPU. That's why I bought the hardware I have :)
Yes, it is, and for good reasons. That's why I disagreed with the original "An unprivileged userspace application, even if coded poorly, shouldn't crash the machine" part.