Timboli: HDDs are simple quick and easy and mostly reliable if you take good care of them.
StingingVelvet: If I had the HDD space to burn Blu-rays without quality loss, and back them up on two drives, that would be sweet. I don't care about packaging. Unfortunately I have like 1,000 movies, so it would take many, many terabytes of space, which is impractical. If you have a much smaller collection though, I guess it makes more sense.
I presume you mean you have 1000 purchased BluRay movies, not that you have burned that many movies into BluRay discs yourself?
I think the discussion was more about burning discs vs writing them into hard drives, rather than whether you should try to copy all your original BR discs to a hard drive. It would certainly be a lot of work, but then your current BR movie collection is dependent on you having a physical BluRay drive or player to watch them on.
I don't have any BR discs (nor any BR player), but I have a few DVD movies which I ripped into mkv files some time ago, e.g. my Robocop Director's Cut and Infernal Affairs 1-3 DVDs. It gave me a piece of mind as now I am not dependent on having a working DVD player or drive, or whether the original DVDs break up or get misplaced.
I used to use my PS2 console as a DVD player but I am unsure if it works at all anymore (I haven't switched it on for maybe even two years, go figure; I have run a PS2 emulator on my PC though; plus the PS2 doesn't have HDMI anyway), and I removed my broken DVD-RW drive from my aging gaming laptop, and replaced it with a third 2TB 2.5" HDD.
The only ability for me to watch my physical DVD movies anymore is to use the external USB DVD-RW drive bought for my laptops, but instead I used it to rip those DVD movies into mkv files that I now keep on my backup hard drive(s). I can watch those mkv files even on a cheapo tablet if needed (using the VLC media player), no reliance on physical drives anymore.
If I were to make digital backups of BluRay movies, I presume I'd look into re-encoding them to some smaller format with e.g. H.265 (or maybe rather with the royalty-free alternative, AV1), giving much smaller size with minimal (or no discernible) quality loss. But that would still be quite a lot of work and time, for 1000 BR movies. How many of those are keepers anyway?
https://en.wikipedia.org/wiki/High_Efficiency_Video_Coding https://en.wikipedia.org/wiki/AV1