Do you store your animes on physical media?

http://share.cherrytree.at/showfile-29849/howmuchanime.png My small but most complete collection of my favorite animes on a 5TB external hard drive. Tend to store file that are in 720p or SD format. I also share this folder over the network, so I stream shows/movies to my phone or tablet. Do you keep your animes in digital format on internal/external hard drives like I do? Burn or buy DVD/Blu-ray discs? Do you watch and delete or stream? Or other? Please let me know! Oh and if you tend to prefer one of those methods, please share your personal cons and pros. I would love to know! (edit: I've checked on the internet, there's normally no plural version of the word 'anime' like in the title. Whoops!)