Reasons to stop using #Lemmy and start using #kbin:
1. Privacy reasons. When a comment is "deleted" on Lemmy, the comment is actually only hidden to all except instance administrators. The comment remains on the post and continues to display the poster's username. This persists even if the account is deleted. kbin does not handle comments this way, and your deleted comments are removed. (Full disclosure, idk yet what happens when a kbin user deletes a comment on a Lemmy post, but I'm looking into it!)
2. kbin offers a sweet community search tool that not only searches kbin communities ("magazines"), but also Lemmy communities and even Mastodon groups! This means you can easily find communities all across the #Fediverse for any of your interests.
3. kbin has a much nicer/more modern UI. It's got some quirks, but it's easier to read and navigate than Lemmy by default.
4. Customization options! Lemmy has themes, which is cool, but kbin has themes and lots of fun toggles to change your experience.
5. Last but certainly not least, Lemmy devs have a pretty shit stance on human rights. (See here: https://mstdn.social/@feditips/106835057054633379). There are communities like #Beehaw, which are super friendly and non-problematic instances separate from the Lemmy devs, but it's worth noting that instances like Lemmy's flagship instance and Lemmygrad are run by folks with some grossly misguided views.
All-in-all, if you are looking for a new home for content aggregation while #Reddit has its little meltdown, I will endorse the heck out of kbin based on what I know rn.