I remember trying second life once a couple of times, then I stopped bothering and forgot why, then more recently I came back to it again. There are way too many restrictions on that 'game' and it does revolve entirely it's in game currency being milked as much as possible. For instance, if you want to import a 3D Model into the game which is actually a very simple process by itself you unfortunately have to go and set up a premium account, here's the catch though they only take credit cards and no, I'm not talking about only taking mastercards I mean, they literally only take credit cards, no debit cards and of course no Bitcoin.
So what they're doing seems extremely dodgy to me and it's also limtiing people from uploading loads of stuff to Second Life and messing around in the universe as much as possible, if the signup process wasn't so ridiculous there would be loads of different second life worlds out there and models, but nope, they're fucking people around the same way all these micro-transaction infested games do.
Honestly, you'd be better off screwing around in GMod, at least on there you have your own dedicated servers and can import models easily this also reinforces my opinion that you just shouldn't have real curreny connected to computer games.
I never liked that game. It looks so goofy and generally cheap, it just makes no sense. Aesthetically it's a mess. If you want to waste some time on videogames there are certainty much better options.