I've started my own server, and may put it on a separate machine for extra security.
A site that everyone should check out is Antenna: gemini://warmedal.se/~antenna/ which is a blog aggregator.
Another nice one is Exploration Surprise: gemini://tilde.team/~sumpygump/explore/ It shows three random domains a day. So you can have a lucky dip.
Why Gemini? Because it's just so cool. It has a little bit of a sub-cultural feel to it. A big difference between Gemini and the regular internet is that people write because there is something they want to say.
I went onto Tumblr just to see what would happen. The first thing that popped up was an annoying window that wanted me to sign up. I clicked on "Maybe Later" instead. Apart from being an annoyance, there's a subtle cue there, isn't there? We'll get you later.
So, the first post that popped up was a picture of a pizza. Why, exactly? Like, what is it the poster is trying to communicate here?
Scroll down a little bit and there's a post by a guy who seems to have an eating disorder. He mixed peanuts with coca cola. That was essentially his whole schtick. Um, OK.
Scroll down a little bit further and I get a pop-up saying "We know you were really enjoying yourself, but we're going to need a little more info." Need? You "need" more info about me, do you?
This is why I like Gemini. There's a whole different mindset. People aren't trying to sell you stuff, scrape your analytics, or be superficial "influencers."