I watch videos on Apple TV, iPad, iPhone, and MacBook Air. None of these play DVDs. (I hate DVDs but sometimes it's the only way to get a video.)
I rip the DVDs I buy using RipIt on my iMac, the only machine I have with a DVD drive. But the drive is failing. It spits out 90% of the discs I put in it.
Instead of fixing the DVD drive in the iMac, I bought a USB-powered "Generic USB External DVD Combo CD-RW Burner Drive" on Amazon for $(removed) (free shipping with Prime). It has worked like a charm with every disc I've tried. It's quiet, too. It does not burn DVDs but I have no reason to burn DVDs. If I need to give someone a large file I will either put it on a thumb drive or upload it to cloud storage.