I still lurk hard on Reddit, but either use a LibReddit redirect extension on both my Desktop and Phone, or I just use Stealth to keep track of Communities on my phone. I just don't post anymore.
This is mainly for research into niche topics or to see if a technical question I have has been asked on Reddit before, which oftentimes it has. I just try to not give Spez a record of my traffic, hence the alternative front ends (as well as using a VPN and blocking JS).
I come to Lemmy to Read/Debate Politics, talk Linux, Privacy, or the Fediverse, as well as occasionally get advice on a topic or two. One TV show I like has a consistent poster in their community, which I'm extremely grateful for.
Another poster here pointed out that the decentralized nature of Lemmy works against it for discover ability, which I generally agree with. I can't type in "question Google should be able to answer but not anymore? lemmy" into duckduckgo lite and get any kind of result like I would if I replaced "lemmy" with "reddit". I'd love that, but it's just not possible right now. So I still lurk via libreddit and stealth.