Sims 4 is really fun. The Create-A-Sim and Build Mode [especially the room features] are actually magical, but it isn't finished yet [and apparently won't be for a while] so it still feels a little lack-lustre in some areas. But it is still very fun, and there is a great sale on Origin at the moment for the EPs [50% off] and some bundles [an EP, GP and SP for 20% off] so it might be a good time to buy if you're enjoying the trial.
@despina53 I wasn't a fan of the art style either, so I've heavily modded the entire game. I wish it had the same open world kind of layout as TS3. My favourite was TS2, but I do like the CAS from TS4 and how easy it is to mod compared to earlier versions. I hope you're enjoying your game too!