Interstellar travel is only going to work if we're using much more powerful propulsion techniques than we currently are. I don't think gravity assists will help

Interstellar travel is only going to work if we're using much more powerful propulsion techniques than we currently are. I don't think gravity assists will help much in that case. I still think it's a boon to have a lot of interstellar bodies though, they are certainly easier to reach than the nearest stars and they could be just as interesting. Who knows what kind of weird, icy worlds might exist out there heated only by radioactive isotopes and tidal forces?