If I ignore all, how will I ever find things to subscribe to? Just search? How will I know what to search for? Am I just supposed to remember to look for new communities every single day? Every week? What if there’s a great community out there that uses a weird name that doesn’t come up in a search? What if I don’t think of something I like and I never think to search for it? What if there’s something I never knew I liked so I would have never searched for it to begin with? What if something interesting happens in a community that I would have never subscribed to but also wouldn’t have blocked?
It’s just immensely more difficult and time consuming to find all the things that I might be interested in rather than eliminate the few things that I’m not. That’s like saying why not just listen to the same 3 CDs I already know I like rather than put on a streaming service and skip the songs I don’t care for. You get so much more content and variety rather than just sticking with what you already know.