I don't have any experience with loading screens on the other games, but I understand why Sims 4 has these loading screens through looking at a technical perspective. Let's say a vet clinic, restaurant, and huge retail store (like a mall) were all in the same neighborhood. Now imagine if I loaded into that neighborhood without the loading screens? Imagine the horrible lag I would experience! My laptop is a great high-functioning laptop, but it still can't handle being in large lots with many sims and activity taking place within it. Imagine how upset I'd be if the loading screens for whole neighborhoods went away... Heck even smaller lots with too many sims gets really bad (looking at you libraries).