While I haven't truly thought about it much, I guess my definition of serious would coincide with what government calls a felony. "What about fraud? Not paying

While I haven't truly thought about it much, I guess my definition of serious would coincide with what government calls a felony. "What about fraud? Not paying taxes?" Maybe I'm just naive but I don't think the average person walks around conspiring to commit fraud but is discouraged by the fact they could go to jail if caught. As for the taxes issue, in this scenario, taxes would most likely decrease since there would be no big security machine (DoD, DHS, NSA, FBI, CIA) to feed, or at least budgets would be slashed. On top of that, there could be systems put into place that automate the taxes and make the current way of doing taxes a thing of the past. The lower taxes and the automated system could make it easy to pay taxes as well as harder to avoid paying taxes.