There are exceptions to all of the points below, but generally:
What do you like better here than on Reddit?
Everyone is here trying to build something better. The developers are actually prioritizing transparency and user choice when making the software. Since the instances aren't after profit, there's no financial conflict of interest. It's actually possible for instance admins to prioritize user experience and a healthy community instead of making a profit.
I love seeing all the different organizational structures emerging; some instances are nonprofits, some are co-ops, some are benevolent dictatorships. I think in the long run this will produce a fairer and more representative online platform.
Also my interactions feel human. If I get 5 upvotes on Lemmy or 5 likes on Pixelfed, it feels like I connected with 5 real people. On Reddit, I just can't tell anymore.
What do you miss from Reddit?
Activity in niche communities, but that's changing slowly.
Also, as a mod, we could still use better moderation tooling.
Do you feel the culture here is genuinely different, or does it eventually drift the same way?
I think over time it will become more like Reddit. As the user base grows, the average will shift closer to what Reddit is like. Also, at the end of the day, a number of the issues are because of how groups of humans interact and not the platform itself.
However, the reason I'm here instead of the many other Reddit alternatives is because of federation. I believe that as long as we maintain a healthy balance in the fediverse (and not let one entity control too much), we can avoid the enshitification while centralized social media becomes unbearable for more and more people.