Things I did in the Sims:
* Box in one sim into a room to see how long they can survive by themselves.
* Set various sims on fire.
* Try to get sims to drown in the pool.
* Holding house parties WHILE people are drowning, to see their social scores drop at the horror of dead bodies.
* Try to "summon the clown".
* Try to kill the clown by burning its picture / effigy on top of the fireplace.
Etc. etc.
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"The Sims" isn't about "housework". It was about "pretend house", the same toy-houses / Poly-pocket / action figures that we kids grew up with except in video game form.
Just as I imagined fights and killing and battles with action figures as a (younger) child, the Sims offered me a "virtual" version of that, where I can play around and toy with the sims.
I wasn't completely a "Sim Sociopath" (I often made "new saves" when I was in a sociopathic mood). I also tried to reach the top of the job ladders (level 10 jobs and whatnot) and tried to make lots of money sometimes. But not always.
Sometimes, you just want to watch the world burn, and "The Sims" 100% allowed you to mess up the dollhouse's life entirely.
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I never got into Grand Theft Auto, but based off of what I've seen in that game... it sounds more like a sandbox game than a 3rd person adventure game. (Where simulated people act "kinda sorta" like a human with social effects, so you can mess around with the world with your own sick, twisted imagination. Or jump off a building with a motorcycle to see if you can reach the other building with enough speed (etc. etc.))