It's largely imposed on us right here at home. There are many who would desire a different system, whether radical or not. But the only choice we are given is elections that are driven by money and sound-bites.
That's our "democracy". Which is still far preferable to losing one's head, but not exactly what was envisioned after the Revolutionary War.
Our founding fathers knew enough to want to stay as far from "democracy" as they could. They ham stringed the government, and only with the increasing "democratization" of that government, has our freedom been compromised significantly.