What gives you a "warm feeling" inside when playing?

For me it's the Sims themselves. I didn't get started until Sims2, which my grown daughter explained was a huge, vastly improved, version of the Sims. I love it for the fact I'm able to create my "own" characters and see them come to life on the screen. As long as the Sims remain their quirky, lively selves, I'm hooked.