It's 2 AM so this will probably be incoherent, but as much for myself as the public: a lot of the joy of watching little computer people live their lives in our facilities comes from watching them put in the effort.
Whether it's The Sims or DF, they work hard both professionally and in their private life. We see the seams of their existence, the things they struggle with- internal and external.
We judge our successes by the lives they live within our worlds, how much effort, how much payoff.