That's a great practical question! The answer is very clear: a wheeled outdoor trash can is dramatically easier to move when full than one without wheels.
Think about the physics involved. A full, heavy trash can requires you to lift its entire weight to move it if it has no wheels. You have to tilt it, drag it, or carry it, which strains your back, arms, and legs. It's awkward, often spills contents, and can damage your driveway or lawn.
A wheeled trash can, however, uses the principle of rolling resistance. Instead of lifting the weight, you're mostly just overcoming friction from the wheels. You simply tilt the bin back so its weight is supported by the wheels, and then you can roll it smoothly with minimal effort. It's a night-and-day difference, especially on hard surfaces like concrete or asphalt.
For regular household use, taking a heavy wheeled bin to the curb is a one-handed task. For commercial settings or large properties, wheels are almost essential. While non-wheeled cans might be slightly cheaper or more stable in very high winds, the mobility benefit of wheels overwhelmingly wins for everyday usability. So, if you prioritize easy movement, always choose the wheeled option.