I played Sims 1 and 2 and then tried 3 on release (paying full price). I don't have much good to say about it because I couldn't play it for long.. it was not the game for me. I did get the starter pack again Base/Late Night and High End Loft a few years after Sims 4 released just because of all the comparisons and thought to try it again and with tips from others maybe I'd like it. I still didn't. Looks like I've logged 17 hours total since that time on Sims 3. I'm near 6000 hours on Sims 4. To say that I like it better is quite an understatement.
I was disappointed when I tried Sims 3 when it came out and I know things changed and were added, but I wasn't disappointed with the base Sims 4 game when I loaded that in. It felt like I came back to a sims game that was meant to be continued from Sims 1 and 2. First yes.. I didn't like the look of the sims in 3. I don't like to spend hours in CAS, and still don't unless really inspired. I didn't like story progression in Sims 3. I had liked the way they did it in Sims 2 and it was jarring to see how it was done in 3. I didn't like driving or walking to rabbitholes.. that was disappointing. I thought when I went into a bookstore.. I'd be in the bookstore and it didn't happen. I didn't like the wish things driving my play (although I understand you don't have to play that way now). I didn't like open world... it took forever to get anywhere and when I played at least the needs would go down basically by the time I got somewhere. The animations, the weird way they move to stand, the run... yeah it looks bad to me. In comparison for me... I can travel easily in Sims 4. I can add anything to community lots and fill my needs easily there from day one while my sim is on the lot. Just go into build quick and plop down a bed for instance. If I get a reward trait I can basically live in other sims houses and use all their stuff (this reward trait wasn't needed at launch). It just made it pleasurable to play, tell stories, be a vagabond... Do whatever. I have a variety of worlds that my sims can go to for different scenery in each save. I can tell the stories I want to tell. I also am very pleased I don't need cc anymore. That turned into a huge part of my play time in the first two games eventually. Just the searching all night then adding it in to play for a short while. I imagine if I could have held out on Sims 3 it would have been the same way. Just so I could tolerate the way the looked.
Sims 4 just has a ton of features that make it better for me. Managed worlds, the ease of the gallery, CAS features like hats and hair and ease of use, body push and pull, musculature. Building isn't hard for a rookie and with patches things have gotten better. Multitasking, fluidity of animations, the list just goes on and on. I do think though because I am a story teller and want to tell my stories my way without it being game driven to the extent of 3 or prior games for that matter it makes me appreciate Sims 4 that much more.