The freezer paper just pulls off of your ironing board if you accidentally iron it on. Same for your iron. Can't say that about fusible - THAT stuff will make a mess!
When I make clothing items, I trace the pattern pieces onto freezer paper and cut them out. Then I can just iron the freezer paper pattern onto fabric and cut, no pinning required. I have a FP blouse pattern I've used probably 10-12 times, it still sticks when I iron it.
Most of what I use freezer paper for, though, is applique.