I think losing out on rather niche communities is going to be my biggest loss from reddit. I've been on reddit since about 2011 or so and the quality and worthwhileness of the site has ebbed and flowed since then, but smaller, sub-10k communities still hold onto the last vestiges of that old-school reddit/internet mindset, and I will miss that a lot. At the end of the day, though, I'm hopeful that Beehaw (and other similar sites/instances) will be able to fill the various voids that we'll all miss - and honestly, we get to be the ones to cultivate that, and I think that's very exciting.