A bit outside my budget and I do not need my games to last that long. Still, for rare media which is hard to find I would perhaps get a few of those discs. Nice monster can by the way, sort of like my Inuyasha energy drink can.
Reminds one of this scene from Hellboy.

hdd is better.

The motors probably consume as much or more than the laser itself. I'm amazed they are driven off a USB port. I wonder what may happen if plugged on a USB2.0 port...

A rant with a bit of expanded info on the USB standards as I recall:
Good old USB 2.0 standard is setup to only allow 500mA (2.5W) while the 3.0 standard allow 900mA (4.5W), was designed to be retro compatible with the old standars and uses twice as much pins (9 instead of 4, with 3 pairs for comms).
If any of the ports only have 4 pins, be the devices or the cable, it's supposed to allow 500mA at max.

The above of course is regarding non charging standards that was later introduced because so many freaking manufacturers did create proprietary protocols...
Most computer USB3.0 ports can deliver up to 1.5A, even those not marked as charging ports.

And then USB-C happen and someone though it was a good idea to rename all previous USB standards, several times....
USB 3.0, 3.1, 3.2 gen1, 3.2 gen 1 1x1, 3.2 5Gbps (probably I'm forgeting a couple more) all may or may not refer to the same type of port, depending on the weather, day of the week and latest lottery numbers.

Now go tell your old auntie wich type of cable she needs O.o
"oh, 3.2 is a higher number than 3.1, thus is better right?"

USB-C is a mess but at least everything happens transparent to the user (mostly).

Can anyone tell this ticks me off a little bit? Sorry for the off topic...

That would be too costly for me, for just one copy. I don't know where you are getting you information about HDDs from, but it simply isn't true that they only last a few years, while at the same time they could die anytime ... it's a gamble, but in my experience, not a huge one.

How you treat a HDD is vitally important, more important than many realize.

For instance, if you completely wipe a HDD and keep doing that, you will shorten its life.

However, if you really only write to free space on a HDD and just read from it now and then, they can last a very long time, decades even.

I have a lot of HDDs, mostly Seagate or WD, but also many Toshiba and several other brands. We are talking more than 50, perhaps somewhere around 100. And I can count the failures over many years, on one hand, and can usually come up with a reason for those failures (i.e. cheap drive or type of usage ... sometimes a crappy connector).

Over time, I have learnt to treat my drives carefully, and that has paid big dividends.

Nothing is cheaper MB wise than a HDD. In fact, you can probably have three drives containing the exact same data, and still be cheaper than burning to disc ... and you have three copies.

If you want to be anal about it, you can always go NAS and mirroring. I did that for a while too, but in the end realized, separate standalone portable drives are the better option ... not all eggs in the one basket etc.

I use a mix of larger powered portable drives and smaller non powered drives.

P.S. And this is not even talking about the benefits of using HDD ... speed of access and writing etc ... storage structure, searching, speed of access, etc.

All that said, if money were no object, then I might also store on M-Disc as well ... but I would also have to have no sense of the value of money, and not care about the time spent backing up. I used to burn backups to disc long before drives were cheap enough to use instead ... burnt hundreds that way, and don't miss doing that at all, quite the opposite.