It's a weird fetish indeed, given that it would surely hurt if these balloons would pop right in your face, or even any part of your body. But that doesn't mean that it's impossible for perverted people to make use of balloons as sex toys. Now, balloons are usually associated with good, clean fun. These people are called balloon benders or balloon artists, and they make a living out of shaping up balloons for their audience to see. There are even some talented people out there who could twist and turn balloons until they become similarly shaped to whatever their audience asks them to. And it's especially fun to blow these balloons until they grow to their maximum size to see what kind of design it has. That is why a lot of guys still enjoy balloons even if they're already adults, as it is definitely a great source of entertainment even if these helium-filled rubber containers don't do anything other than taking the shape of your favorite cartoon character, animal, or even just random shapes.
They float, they fly, they pop, they burst, and they can be shaped in almost any way that you want. Admit it, you've always had a fascination for balloons ever since.