Maybe this thread is moving away form the original post, with that said; over the years technology has changed many times. When the 5.25 inch floppy drives became obsolete, I ended up purchasing an external 5.25 inch floppy drive. When the small 3.5 floppies became obsolete, I picked up one of them. We now also have a external DVD and Disk reader because or last several lap tops did not come with a disk drive at all.
As far as DVD's go, we also have a small portable DVD player that the grand kids used when in the car. Now, they have DVD players fabricated into the framework of most cars!
So, if you still have all those old DVD's and you know technology is changing and changing fast, get out there and pick up an external drive for your laptop.
For what it's worth, I hung on to my old Beta VHS cassette tape machine, later another VHS machine, just because we have so many home videos we did on Beta and VHS recorders.
Plan ahead. Another option is to take all those old movies on disk and convert them to a new format. There is nothing that says you can't do this with YOUR own copy. The problem arises if you try to resell those copies! For your private use, you can do anything you want. Try to sell it, and THAT's when you get into trouble.