Ok, first off, I am lusting after an Alienware pc so I SO envy you Tobey!
As for giving up Sims3, I doubt it. I don't plan on it. Why? First of all, to me Sims4 is too cartoony and those Sims are no way near realistic. Too Disney. But mostly it's because I can't play for more than fifteen minutes straight, IF that, before the game crashes. I am fed up with it. I hate the neighborhood thing and think it's stupid to have to waste all that time, and regular crashes, just to go next door to visit a neighbor. I LOVE CAS, but not Sims4 version of it. I hate it that I can't create patterns via recolor and I miss being able to control exactly where I want to squeeze something in in build/buy mode without having to do camera angle gymnastics. Worse, all the words for anything printed is so tiny I literally am using a magnifier to read them. And here I thought the little icons in Sims3 were small! Hah! Nothing compared to the minuscle things you get to choose colors from in 4. Ok, I'm ranting and it's not really fair. I'm still trying to give 4 a fair shot and am playing it off and on most of the day. The off part is me getting over being ticked at still another crash. I do love the Sims my kid and I created. I hate trying to build a house, although I've seen some really super ones. The bugs in 3 weren't bugging me but the ones in 4 are. So why would I give up something as creative and FUN as Sims3 for something as frustrating and hard work as Sims4? Nope, 3 stays for me.