self-hosting was originally a "right" we had upon gaining access to the internet in the 90s, it was the main point of the hyper text transfer protocol.
It's painful to have your site offline because a scraper has channeled itself 17,000 layers deep through tag links (which are set to nofollow, and ignored in robots.txt, but the scraper doesn't care). And it's especially annoying when that happens on a daily basis.
Not everyone wants to put their site behind Cloudflare.