It’s sad enough when people feel the need to decorate their back windshield with stickers for each one of their stupid kids- but at least those are, you know, kids. Actual people. Not cats. The fact that you’re this pathologically-obsessed with felines is something you probably don’t want to broadcast to the world.
It’s certainly not going to get you laid anytime soon.
In fact, I believe the only bigger turn-off bumpersticker is the one that proclaims “MY OTHER CAR IS A BROOM.”