Well the voyager probes were designed to visit planets, not just be flung in to space. Their very path away from the sun involved a ton of planetary passes. Oh

Well the voyager probes were designed to visit planets, not just be flung in to space. Their very path away from the sun involved a ton of planetary passes. Oh and the probes are pretty big and heavy. What has been discussed is the creation of small probes designed just to be flung in many directions. We just haven’t felt the need to prioritize that over other possible missions. My hope is that this is something we will do in the next couple of decades as space travel becomes cheaper.