I find that downloading porn and having it immediately available on my hard drive is a lot more convenient than having to browse to a website, search for a specific image/video, and then wait for it to load.
Plus, when it's saved on a hard drive, you don't have to worry about it getting deleted or the site being taken down or what have you. Also doesn't require an internet connection.
You must be really new to the internet if you think that saving porn is a "lolol trilby anime nerd" thing. Nice meme though.Must be a lonely trilby wearing MLP / anime thing I guess.