I used to be that way about my data. I had a USB hard drive dock, and I would have backups on 3 separate hard disks. No 2 were ever connected at the same time. For personal stuff, like photos, I would burn them onto DVDs. I was so paranoid that my data would be lost to a random power spike, and I was sure I was covered. I was indeed covered from a power spike, but when Hurricane Sandy hit and we got hit with a 25ft Tsunami. The salt water killed all electronics within seconds. It's amazing how fast electronics rust from salt water. I lost all my drives, but the DVDs survived.
I also learned another lesson with photos. I would save EVERY photo that I took. After sorting through them, I realized that I could delete about 50-60% of them. About 40-50% were good shots, the others were deleted. I now go through any new photos several times to see if they are any good, and delete the ones that aren't. I am now very selective of what photos I keep.
Going through the aftermath of Hurricane Sandy, I came across old ZIP Disks filled with some of my old CLIPPER code, including the source for a library I used to sell. I realized that I haven't used CLIPPER in well over 15 years, and probably nobody else has either. So, saving old code like this is tantamount to hording If I really needed it, I could probably find one old user that has it on a torrent. Is it illegal to download a copy of your own software?
I am now very selective of anything that I keep. I routinely go through my backup disks and delete stuff I no longer use.