How many times have you tried to get off either front or rear brake rotors and they were frozen (rusted) onto the hub? Standard shade-tree (and professional many times) method for popping them is to hit the rotors with a big sledge hammer. This is a great way to kill your wheel bearings.
Next time, try this method. A picture is worth a thousand words….
Remove the brake caliper, and then pass a bolt through the caliper ears. Thread on a nut between the rotor and caliper ear. Slowly tighten and release the but as you rotate the rotor. It will quite simply, just fall off.