To be clear for the first few years I was pretty critical of the game easing up on my criticism once Toddlers came out. I hated how incomplete of a base game had been sold to us. Through patches the base game is now finally complete after terrain tools got added (IMO and about flipping time too).
I think it is worth it whereas when it came out it certainly wasn't.
That aside now is now and I know a few people will say the game is loaded with bugs but truthfully I have every pack and over 10 gigs of CC and I have very few bugs. My game runs smoothly without lag and none of the bugs I occasionally get are anything I consider to be game breaking.