In my fantasy/scifi book series I have it such that aliens can make it to Earth, but why do they want to? The few who do, they are doing it for scientific/explo

In my fantasy/scifi book series I have it such that aliens can make it to Earth, but why do they want to? The few who do, they are doing it for scientific/exploration purposes and therefore not interested in breaking our ignorance. The break point is obviously aliens taking refuge in our system hiding from their enemy. We now know aliens for sure exist, they just find us boring. They'd rather goto vacation/pleasure stations, not some jerk primitive planet who attack all aliens they meet.