Most ppl are quite happy with their RAID-0's - and that's OK. Just make sure that you really *DO* make regular backups, if you decide to go there. You do NOT want to be tempting fate with such things, it's a really bad idea (Murphy's law applies in its full, cruel correctness).
RAID-0 has a nifty benefits - but I'd only consider it if I know I can do the backing up too. "Just in case". You don't want to be standing before a literraly "empty" hard-drive, now do you?

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So - RAID-0 is fine, just as long as you have the means & discipline to do regular backups

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