I swear to God, people forget how easily shit is lost on the internet. It boggles my brain when I was chatting with people and say they put loads of effort into a game but have no interest in a PDF for it and want to keep it a website.
Maybe it's because I was around when the internet started but your site will die one day, anything that can be saved to a harddrive or kept in print media will keep it alive when that day comes.