SL makes The Sims look like a rough draft. You can do whatever you want in Second Life. If you want to build you can be as obsessive about it as you want too.
SL is more an environment than a game, so no need for bathrooms and food and such. There are nowhere near as many sounds and flashing lights as a game .... and the ones that are there you can usually shut off.
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"The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' (I found it!) but 'That's funny ...'" -- Isaac Asimov