Second Life, aside from being a den of iniquity on a par with Mos Eisley Space Port, is an excellent place for building and creating all kinds of content from explorable cities, to seedy clubs, to animated films or machinima as they're called when created in video game style environments.   You can also hold outdoor raves, have parties, go flying or sailing, explore Lovecraftian horrors, build retro computing museums, visit reactor four at Chernobyl, take a walk through Roger Dean landscapes...  The opportunities are endless.  I personally like to build cybercities and take photographs and machinima shots in them.

Second Life, created by Linden Labs, was inspired by Neal Stephenson's metaverse, the computer generated alternate reality that the society  in his dystopian classic, Snowcrash (1992), created and inhabited to escape from the hideousness of their everyday lives.

Second Life was created around the same time Mark Zuckerberg was successfully sued by the Winklevoss twins for stealing Facebook from Cameron Winklevoss, Tyler Winklevoss and Divya Narendra, yet Zuckerberg has renamed his company 'Meta' as he pretends that the metaverse was all his big idea.  No mention of Neal Stephenson, let alone Linden Labs.

While it's possibly worth noting that Stephenson created the metaverse as a warning against how appalling the future might turn out, this does not alter the fact that Second Life is already doing pretty much everything that Meta proposes to do, and has been for the last twenty years.  Not that the Zuckmeister would ever appropriate, legally or otherwise, other people's ideas...  Like Facebook, Instagram, WhatsApp...   Well, here's the complete list.