i have a feeling you're a bit dense, so i'm gonna break this down as much as possible
Laserdisc recorders were around in the mid 80's and were for data storage, and professional duplication use only.
You're not going to find a unit that still works, and if you do it's probably a $1000+ piece of equipment.
Even if you got one, you're not going to find discs. Companies aren't in the business of making media that nobody's going to buy.
And if you could find an original unwritten piece of media, it would be so old, that it would be unwriteable.
Whatever it is that you like about laserdiscs, you're not going to GAIN by copying your dvd's onto laserdiscs. That's like saying you like the sound of AAC compression better than MP3, so you're going to convert all of your MP3's into AAC's.
If you don't understand why that's completely absurd, then i guarantee that you'd never be able to figure out how to transfer a DVD to a laserdisc in the first place.
And lastly, and i can't possibly simplify this any more, your dvd's are already on dvd's, so why not just put them in a dvd player, and watch them?
So hurry up and enjoy your laserdiscs, get a hug and have a cry over laserdisc's retirement, and once they all laser rot and become unplayable, you'll figure out why you've ALREADY wasted a considerable amount of money buying legacy equipment that can be outdone for less money.