I don't know about riding lawnmowers. They're not really big enough to tear anything up.
You must be thinking those little pansy riding lawnmowers, this was one of those big ones that real men smoking cigars ride, designed to quickly dispatch about an acre of lawn.
My dad's riding lawnmower had a decent engine, rev it up, pop the clutch and you could pop a wheelie, ticked my mom off to no end.
We had so much grass, you start mowing the wide open spaces with the old ford tractor which had a sickle mower and hope you don't chop any rabbits in half, makes cleaning the blades a real pain. If you don't have a clue how powerful a sickle mower is, my dad accidentally chopped a fire hydrant in half that was hidden in a pile of weeds. People keep a respectful distance from sickle mowers.
When you get too close to the house landscaping you switch to the big riding mower, since the sickle will take down small trees, bushes, lawn chairs, anything it it's path, so you need a riding mower with more finesse.
When that's done you get the push mower to trim what the riding mower couldn't reach.
Now, you stand back, look at the nice work you've done and head right back out to the tractor and start the sickle mower again because now that you've been mowing for a week the grass has already grown too high where you started.
That's the kind of driving I got to do... grass was driving me crazy.