I moved my Sims games over to Origin a long time ago. It's where they belong. I have no opinion on EA as a developer/publisher.
TS3, as it is called by it's players who identify themselves as Simmers, is aptly the third offering in the series. It offers total customization on evertything, which in hindsight stands as a development milestone that has no equal. It is an open world sandbox, where you can either try to do little goals presented by the game to have a little direction in your play, or totally go and do your own thing.
Wanna build a dinasty that stands the test of time over many generations? Go do it.
Wanna play fashion-designer and have avant-gardistic Sims populate your game world? Go do it.
Wanna mod your game into something totally different than what it was when you bought it? Go do it.
Right down to:
Wanna be a playah and impregnate every woman in town? Well... Go do it.
TS3 is many things. It's instantly playable, it's pleasingly colorful, it's quirkily humorous, it has some sweet tunes and you get unlimited customization and unlimited ways to play the Sims. Now that TS4 is out, it becomes painfully obvious how chockful of awesome ideas TS3 is and how amazingly optionfilled the player-agency in TS3 is.
So, what went wrong? Well, Maxis was busy coding SimCity and left development in the hands of an unproven studio that brazenly rebranded themselves into 'The Sims Studio' to hide the fact that they were called EA-of-Canada originally. With each new idea they implemented, they broke something and they even managed to break stuff that was broken to begin with. They patched and patched to little avail and to this day TS3 stands as one of the most innovative sandbox games ever, but more broken than the most broken Bethesda title in existence.
Still, in the current Sims-franchise landscape, TS3 is the one game to have. As a Simmer since 2000 owning everything that has 'The Sims' in the title, I can confidently say this. It expands on ideas introduced in TS2, it doesn't have bedtime-tale graphics and it allows the player to create their own stories and experience much better than TS4 allows.
Free from any consideration involving EA, TS3 is a good game and if you can keep it running long enough to make some self-generated progress, TS3 becomes one of the more enjoyable experiences you as a gamer can have. Open mind and all that goodness.
I therefore recommend trying this title, but don't buy it on here. Keep an eye on Origin Sales and buy the game there. Unless your Internet-full-of-yourself-ego bars you from doing that. I'm not the one to judge.