>>585736Usually they have better image and sound quality than the ones you find in a stream site. You also have the possibility of downloading the Blu-ray version of the anime, which usually have better quality than the version that aired in TV. Not only image and audio but also corrections in the animation are made by the studio. When an anime is being produced, there may be some production issues while it's airing and some of the episodes won't have enough quality control so corrections are made in the Blu-ray/DVD version, and this usually happens in all anime (people usually call it QUALITY, in all caps). Here are some examples:
https://imgur.com/a/2Bt2Chttps://imgur.com/a/pxPLtzJhttps://imgur.com/a/fwcD4https://imgur.com/a/NeGbJhttps://imgur.com/a/EzVDMIt's also more difficult to find older anime in stream sites, and you usually have only one subtitles/translation option available for you. You can easily choose the best translation option if you download your anime.
It's also easier to marathon an anime series if you download everything in advance so you can enjoy it without having to go the next page to watch the next episode or have to worry about ads.
Do you have a reason why you don't like torrenting?