Exactly. It shouldn't even be called RAID, because it's the exact opposite of "redundant". RAID 5 or 10 is good, but then you need more than 2 drives. And of course just mirroring is the way to go if reliability is critical and capacity and speed aren't.
It wasn't even in the original definition of RAID. They stuck level 0 before the original levels 1-5. Unless I need a really fast system for temporary data (e.g., writing uncompressed 1080p video before it's moved off to permanent storage), I'd rather go JBOD instead of 0.