Really? Like a dog looks like a cat eh?
They both look like bugs, and they both come in massive groups and are a nuisance.
I don't know about where you live, but during the summer when I turned 9, was when they all hatched and invaded in Illinois, and it was terrible. They were everywhere, and you'd go outside and you could find some that were just heads with a bit of their bodies left, only they were still alive, and they walked around with only half of their bodies intact.
Maybe you thought it was fun, but to a 9 year-old girl, cicada heads walking all over the drive-way and flying at you, when you are already afraid of bugs, is not at all pleasant. When I taped them to the trees, I felt they got what they deserved.