Gemini is fantastic. For anyone interested in experimenting with it without setting up a server, I've been working on a simple Gemini site builder that works over HTTP and serves the content via Gemini and HTTP proxy:
In my view, Gemini's bare-bones text format is its killer feature. Non-technical users have been able to easily write Gemtext based on a few examples and a bit of experimentation. This gets users away from WSIWYG without forcing them to learn something as complex as HTML. And unlike Markdown, it is clearly-specified, universal, and doesn't compile to anything else.
Many people criticize Gemini for lacking this or that feature, and being basically useless for "practical" applications. I wrote an blog post about this: