Actually, I've found just the opposite - I've been more likely to spend more time on lemmy/kbin over the last couple of months than I spent on Reddit in years.
It got to the point that I'd just pop onto Reddit, look around, see the same basic variety of botspam, astroturfing and concern trolling, and go do something else. It wasn't even worth posting anything, since any response I got was almost certainly going to be from a bot or a human-who-might-as-well-be-a-bot, and it was going to be the same thing either way - just some shallow bit of stock rhetoric that at best might be sort of tangentially related to what I actually said.
But then I came here and rediscovered the pleasure of reading posts written by actual people who actually think about what they're saying, who will actually read and think about what I actually say in response, then write a response that they've actually thought about.
And that was it - I was hooked in a way I hadn't been for years on Reddit.
That said, it's nowhere near as good now as it was a few months ago, and I have been less active recently. The last big migration in particular, after the API changes went into place, led to both more bots and more humans-who-might-as-well-be-bots, and the quality here went sharply downhill.
It's still better than Reddit though. And it's been improving again of late.