Drives fail over time, just like anything susceptible to mechanical wear and tear or NAND flash cell breakdown. I've had brand new drives from all manufacturers die on me within 1 year of ownership, and I've got drives of all manufacturers still running fine after 10+ years of heavy use. Anything mechanical begins to die the moment its' powered on, so when it comes to hard drives, one should expect the drive to fail at some point between the time it leaves the factory and 1 day to 15 years into the future, give or take.
Can power cause a drive to have problems? Sure, but usually unless you physically fry a capacitor or power circuitry on the drive, you're not actually causing problems due to power fluctuations. What is more likely to happen when you power off a drive that's still writing data is filesystem corruption, which can sometimes be repaired by Windows disk scans or other software-based recovery tools. That being said, OCZ SSDs were not known to be reliable, and your 2nd drive is a used drive so you have no idea what kind of abuse it was put through before you started using it.
I wouldn't say you're cursed in any way - not by a long shot. You've just had bad luck with your first new drive, then were using 2 additional drives that were of dubious quality due to OCZ SSDs being problematic and that 330GB (? size is probably wrong cause I don't recall that being a standard drive size) used Seagate drive.
_kukuru got a reaction from kirashi in Storage Device curse
_kukuru reacted to kirashi in Storage Device curse
