Apple has been moving steadily away from optical media for years, and others in the industry are starting to follow them. Give it 5 years and many/most new computers won't have optical drives. Give it 10 years and the DVD player you've got hooked up to your TV now will be a relic like a VCR is today.
That said, if you need to burn videos to DVD today, Clinton's reply has you covered. 🙂 But you can also just export a movie to something like an mp4 file and put it on a flash drive or SD card, and most modern TVs can display the video right from that device without the need for any kind of external player.