I am theoretically switching over from Reddit to Lemmy. Finding myself spending more time on Lemmy than on Reddit. Maybe it’s because I am limited to using the desktop and can’t aimlessly browse Reddit on my iPhone. Of late, the only subreddits I cared for were on sports and their matchday threads and r/watches. I found myself aimlessly browsing through r/AskReddit and asking and answering pointless questions.
From a non-technical standpoint lemmy and kbin do more or less the same thing (and federate with each other).
That said kbin is also able to federate with masterdon (from what I gather, mastodon has no interest to me).