Unless you own the land outside the city you plan to fly on I wouldn't suggest that either.
Some of us live in areas with substantial public lands which are not wildlife preserves. Now, to be fair, my local BLM land is also a MOA, and in theory people aren't supposed to fly model aircraft in special operational areas. But on the flip side...
There is a reason there are rc clubs with private airstrips and tracks.
...a famous rc club strip in the Mojave is also in a MOA. And aircraft are allowed to use MOAs without permission at their own risk, so it seems like so long as I obey all the usual restrictions (max 400' AGL, LoS or in communication with a spotter with LoS) that's not a problem.
I could also just go fly at Highland Springs reservoir, which (like my house) is within the 5 mile circle around the local airport, if I just notify them ahead of time. One is not required to ask permission either, although they'd surely let me know if there were going to be firefighting aircraft in the area, at which point I wouldn't be permitted to fly. The only place around an airport where you're really not allowed to fly is within a certain relatively short distance around the air strips of controlled airports themselves. You can fly RC around private airstrips (as in, for real aviation) with permission, but you are required to keep a certain distance from actual aircraft in operation.