i uninstalled ts4 months ago as well. sometimes i want to play it again, but then i give a look at my screenshots, see all those sims with a grin in their face standing still doing nothing and then i remember some of the reasons why did i uninstall it. cas and build are fun until you go into live mode and realize all your sims act the same, do the same, have the same bugs and you're stuck in a loop of boredom where you want to play but there isn't much to do. not even with mods, although very helpful they can't fix something that devs won't even fix themselves.
i reinstalled sims 2 & 3 some weeks ago, i haven't played them very much but so far the difference is very noticeable, they are not perfect games but the gameplay and AI are way better done.