Didn't intend to make a tirade but:

Yes! Search for a house without a tree in a neighborhood full of trees. Enjoy!

Having a flat lawn may be unnecessary, but generally, most people want a lawn that a lawnmower can cross w/o self-destructing [or that their oft-drunken uncle can walk across after dark without tripping on a root and passing before his time.]

A lawnmower blade is usually not adequate for a 4-inch root knuckle risen from the depths - that requires a chain saw. But then you're chain-sawing in dirt, mud and root, so neither safe nor easy. This is a contest the homeowner cannot win, merely survive.