I think all the gas giant worlds of the solar system have rings to some degree. It`s probably a feature of their creation, or the product of collisions of their many satellites over millions of years.
Saturn simply has more material than the others, and the fragments are larger. Their icy nature also makes them highly reflective and visible. But our telescopes can`t resolve the fragments into discrete pieces in photographs at that distance, etc., but the photography of orbiting probes like Voyager and Cassini-Huygens have shown the rings for what they are.
The Scottish scientist, James Clark Maxwell, proved with mathematics alone Saturn`s rings couldn`t be solid in the mid nineteenth century.